Topic
Mechanical Failure
Failure of machinery or mechanical components relevant to safety.
Newest 100 Documents
All 1,773 in search- 202612 Aug
Crane Failure Highlights Crane Inspection Gaps
Two platform crane incidents involved failed sheave bearings, a falling boom and a dropped cable and load block. Inspection gaps included omitted pin removal and inadequate lubrication checks. The alert recommends considering revised inspection criteria, scheduled inspections, training to recognise mechanical distress and lift planning around vessel interfaces.
- 20261 Jul
Inspect A2B Systems and Wire Rope Terminations to Prevent Crane Hazards
A lift boat crane incident involved a detached anti–two-block weight, corroded wire rope and falling components. Recoiling rope struck a nearby diver, causing minor injuries. The alert recommends considering termination maintenance, pre-use and periodic inspections, adjusted replacement intervals in corrosive environments, and competence assurance under API RP 2D.
- 20261 Jul
Mechanical Failure of LACT Pump Caused Fire
An offshore production facility fire followed LACT charge-pump misalignment after motor replacement. Excessive vibration loosened casing fasteners, allowing oil leakage; coupling failure caused further damage. The alert identifies omitted angular alignment and incorrect bolt torques, and recommends manufacturer-compliant installation, personnel training, review of post-installation surveillance and investigation of abnormal operation.
- 20266 Jun
Poorly Maintained Crane Components Result in Multiple Personnel Injured During Transfers
Two offshore personnel-basket transfer incidents involved uncontrolled crane auxiliary-line descents and injuries. Investigations identified uncorrected component deficiencies in one case and inadequate hoist brake adjustment in the other. The alert recommends considering timely maintenance, loaded brake checks, wire-rope fouling checks, stop-work interventions, clearer transfer communications and verified medical evacuation arrangements.
- 202627 May
Givaudan Sense Colour Explosion
Investigation of a fatal reactor explosion during caramel colouring manufacture in Louisville. A vent valve failed closed, accelerating sugar decomposition; cooling and emergency pressure relief capacity were inadequate. Calorimetry and component testing inform findings on reactive hazards, process safety implementation, operating limits, occupied-building siting and regulatory coverage gaps.
- 202621 May
AW139 Tail Rotor Duplex Bearing Failure Discovered During Maintenance
AAIB investigates a tail rotor duplex bearing failure on AW139 G-CIMU, discovered during maintenance at Norwich Airport after offshore passenger operations. Forensic examination could not establish the initiating cause. Rig testing discounted removal damage, while flight-data analysis identified pedal-position trends. The report examines inspection limits, condition monitoring and critical-part regulatory assurance.
- 202614 May
Machinery damaged through improper maintenance technique
An offshore vessel audit identified a fuel oil purifier that failed to self-discharge. Investigation found incompatible component swaps and bowl damage from improper dismantling without specified tools. The flash highlights adherence to manufacturer instructions, compatible genuine parts, planned maintenance intervals, repair records and stop-work authority.
- 202614 May
MSF: Fast Rescue craft (FRC) washed overboard and lost at sea
An unexpected wave washed a vessel’s fast rescue craft overboard after driving it upwards against its davit. Worn, under-dimensioned lashings tore apart, and the hook arrangement suffered impact-related deformation. The flash describes subsequent recovery, enhanced securing inspections, possible additional heavy-weather lashings and planned replacement of lashing straps.
- 202614 May
Shifting cargo and deck spill during heavy weather
During heavy-weather transit, a brine storage tank shifted approximately 0.5 m, struck a crash rail and damaged its manifold valve, spilling brine onto the deck. The flash identifies slackening lashing chains and inadequate securing, and recommends redundant lashings, impact protection for vulnerable fittings and review of weather risk assessments.
- 20266 May
Catastrophic engine failure and subsequent fire on board the site investigation vessel Kommandor Susan
Investigates a diesel generator failure and engine-room fire aboard Kommandor Susan during sea trials in the Firth of Forth. The report links premature bearing wear to substitute components and inappropriate extended service intervals, examines contractor oversight, and describes successful firefighting alongside emergency anchoring difficulties caused by dependence on electrical power.
- 202624 Mar
BSEE: Crane incident leads to serious facial injuries
This flash summarises BSEE findings on a lifting pin failure during well abandonment aboard a lift boat, resulting in serious facial injuries. It describes stuck casing, excessive loading, incorrect sling positioning and unsuitable procedures, with recommendations addressing free loads, rigging plans, safe working loads and stop-work authority.
- 202624 Mar
Dropped object – strop parted over sharp edge
During a yard stay, an 8.6-ton crane cylinder fell through a vessel’s deck after sharp edges cut a soft sling despite firehose protection. No personnel were injured, but painters were nearby. The flash discusses hard rigging, conditional sling-capacity reduction, risk reassessment and permits addressing conflicting work.
- 202624 Mar
MSF: High potential near miss during FRC maintenance
During sling replacement aboard a vessel, a fast rescue craft slipped from its davit cradle. Two crew members jumped into the sea and were recovered unharmed. The flash describes inadequate securing, a failed bowsing-line carabiner and gaps in work planning, including missing procedures, risk assessment and permit authorisation.
- 202617 Mar
Failure of A-frame fold-down platform
A hinged A-frame platform failed during sheave-block load checks aboard a vessel alongside for mobilisation, leaving a crew member suspended in their harness with minor injuries. The flash identifies missing cotter pins, hinge design flaws and galvanic corrosion, alongside omitted change management, scheduled maintenance and platform inspections.
- 202611 Mar
Loss of propulsion in heavy weather experienced by the passenger vessel Spirit of Discovery, leading to over 100 injuries and one fatality
Investigation of Spirit of Discovery’s repeated propulsion losses in heavy weather in the Bay of Biscay. It examines pod overspeed protection, automatic pod parking, weather routing, furniture securing and medical response. Violent vessel motion injured 115 passengers; one passenger sustained a spinal injury and died four days later.
- 20263 Mar
Cook temporarily trapped in freezer
A vessel’s cook became trapped in a walk-in freezer when the unsecured door closed during adverse weather and the internal release button was inoperable following moisture ingress. Crew opened the door externally without injury. Actions included weekly maintenance inspections, greasing the release mechanism, revised entry procedures and crew training.
- 20263 Mar
Towing wire parted
A towing wire failed during barge manoeuvring after earlier snagging damage. Its excessive length for shallow water allowed it to drag along the seabed. The crew continued safely using an alternative wire. Lessons emphasise matching wire length to water depth and stopping to repair damaged equipment before resuming work.
- 20263 Mar
W2W gangway bumper damaged during demonstration
A walk-to-work gangway bumper broke off during an emergency-retraction demonstration while connected to an offshore wind turbine transition piece. Vessel movement during an approximately one-second uncompensated delay overloaded the bolts. Nobody was harmed. Actions included crew refamiliarisation, revised demonstration procedures and manufacturer evaluation of a possible software revision requiring class approval.
- 202613 Feb
Missing protection – progressive wear on hydraulic hoses causes damage
An inspection identified hydraulic and fuel hoses rubbing against surrounding surfaces and sharp edges, with abrasion and missing insulation. The flash discusses routing clearance, securing, protective sleeves and routine inspection to address progressive wear and potential leaks, fire and machinery failure. It also highlights unsecured deck plates.
- 202613 Feb
Positive: damage to Fast Rescue Craft davit wire rope caught before failure
Routine checks revealed a fracture at the socket termination of a fast rescue craft davit wire rope before failure occurred. An authorised service provider inspected and repaired the rope. The flash emphasises monthly maintenance, checks before every use, attention to load-bearing components and discussion of defects during crew safety meetings.
- 20264 Feb
BSEE Safety Alert 512 - Crane Incident During Well Abandonment Operations Injures Worker, Reveals Safety Gaps
A lifting pin failed and struck a worker during crane-assisted casing removal for well abandonment. Findings identify obstructed casing, excessive loading, misplaced sling connections and unsuitable procedures. Recommendations address free loads, correct equipment and rigging, accurate safe working loads, hazard awareness and stop-work authority.
- 202622 Jan
Dropped GRP cover during subsea lifting
A GRP manifold cover detached during subsea relocation and dropped approximately 7 m, without injury or damage to the manifold or bottom structure. Findings identified excessive loading during a crane mode transition and erroneous lifting-rod calculations. Revised lift planning removed the mode switch and used deployment lifting points; keeping divers clear prevented potential serious injury.
- 202622 Jan
Fall from a pilot ladder while attempting to board the cargo vessel Finnhawk from the pilot vessel Humber Saturn with loss of 1 life
Investigation of a fatal pilot boarding accident involving Finnhawk and Humber Saturn. A probable cardiac event preceded the fall, while recovery-platform failure left the injured pilot partially immersed for over 40 minutes. The report examines medical fitness assessment, hydraulic defects, maintenance, cold-water protection and rescue training.
- 202615 Jan
Fatal injury to a deckhand following a chain failure on the scallop dredger Honeybourne III (PD905)
Investigation of a deckhand’s fatal injury aboard Honeybourne III after a quick-release chain failed and a towing block fell during fishing-gear retrieval. The report examines chain bending, wear, material properties, inspection competence and suspended-load exposure, supported by laboratory testing and finite element analysis. It records company actions and regulatory oversight deficiencies.
- 202518 Dec
Two Walk-to-Work gangway incidents
Two related Walk-to-Work gangway incidents occurred during offshore wind personnel transfers. Hydraulic stiction caused uncontrolled slewing and a collision with the vessel crane. Subsequent modifications introduced an automation logic error that prevented retraction during connection preparation. The flash describes hydraulic adjustments, revised operating procedures and manufacturer testing; neither incident caused injury.
- 20255 Dec
Falling Corroded Crane Component Results in Near Miss
A corroded crane boom cable runner fell approximately 50 feet during maintenance on an offshore platform, landing approximately 20 feet from personnel. The alert identifies uncompleted inspection repairs, incomplete hazard identification and absent barricading, and recommends considering improved job safety analysis, supervision and maintenance follow-through.
- 202517 Nov
Broken equipment repaired or replaced
Five cases describe defects affecting a dock firefighting pump, immersion suit zip, emergency exit handle, ventilation flap seals and lifejacket storage box hinges. Repairs, replacement and additional inspection arrangements restored readiness. The flash highlights potentially serious cumulative consequences of minor defects and suggests considering regular checks of safety equipment details.
- 20252 Oct
Dropped object due to over-ridden limit switch
A vessel crane operator bypassed limit switches while raising the hook for an overboarding lift. A mini beacon struck the clump weight and fell to the deck; a restraint and sensor cable also parted. Nobody was injured. The flash examines knuckle-boom configuration, override decisions, safety-system verification and safer equipment design.
- 202518 Sep
Auxiliary engine room fire on board the ro-ro cargo ship Finnmaster
Investigation of Finnmaster’s auxiliary engine room fire during departure from Hull. Partial fuel injection pump coupling failure and leaking hot exhaust preceded fuel hose failure and ignition. The report examines defective emergency power, incomplete carbon dioxide suppression, maintenance and supplier assurance, system testing and crew response. No injuries were reported.
- 202517 Sep
UK HSE: oil company fined after serious failure of elevator
An IMCA safety flash describes three workers encountering water while descending in a lift on the FPF-1 platform for inspection work. They stopped the lift and returned safely without injury. Hardware failures, incorrect operating procedures and absent water alarms were identified; enforcement included a £300,000 fine and an improvement notice.
- 20254 Sep
BSEE: Electromagnetic lifting device dropped steel plate
This safety flash summarises a BSEE incident in which a steel plate detached from a worn magnetic lifting device, fell approximately 1.2 m and injured two workers’ feet. It discusses inadequate task hazard analysis and stop-work culture, alongside recommendations for inspections, load testing, power stability and electromagnetic lifter operating procedures.
- 20254 Sep
MSF: Grease gun hand injury
A crew member suffered a grease injection injury through a glove while disconnecting a battery-powered grease gun hose during tensioner maintenance. The flash reports a malfunctioning pressure release valve and possible handling and training shortcomings. Lessons emphasise manufacturer instructions, pre-use hose and nipple inspections, suitable gloves and consideration of safer tools.
- 20251 Aug
BSEE Safety Alert - 504 - Malfunction of Rental Generator's Engine Air Shutoff System
A rental generator fire on an offshore platform followed a closed right-bank air flap, allowing unburnt diesel and excess oil to accumulate and ignite with heat from the operating left bank. The alert recommends considering improved maintenance checks, alarm verification, training and procurement assurance, including independent testing of each emergency air flap.
- 20259 Jul
Hose Recoil Strikes Banksman
During scheduled replacement of a potable-water bulk hose on a MODU, a crane lifted one end while the hydraulic reel paid out the hose for deck coiling and backload. The hose separated within a ferrule near the lifting point, recoiled towards the bulk loading station and struck the banksman.
- 202519 Jun
Fatal accident on the beam trawler Cornishman with loss of 1 life
Investigation material examines the fatal failure of Cornishman’s trawl quick-release chain, including corrosion, side loading and material properties. Technical annexes document magnetic particle inspection, metallography, hardness and break-load testing. Recommendations address inspection, fabrication quality and consideration of alternative release designs; an annex discusses the separate Honeybourne III accident.
- 202518 Jun
BSEE: Umbilical termination failure leads to dropped ROV
An ROV dropped to the seafloor during recovery when its umbilical parted at the cursor rail transition. Faulty resin casing and improperly arranged armoured strands compromised the attachment despite a previous successful pull test. BSEE recommends termination inspection procedures, re-termination training and pre-job connection checks. No personnel harm or seabed asset damage occurred.
- 202518 Jun
Dropped object hazard: access hatch to the communication dome
A scheduled mast inspection identified a detached communication-dome hatch. Its primary securing mechanism had failed, while an undersized secondary lanyard used adhesive pads that detached. The flash recommends mechanically fixed, appropriately rated secondary retention, anti-loosening measures, planned maintenance and procedural double checks after work.
- 202510 Jun
BSEE Safety Alert 502 -Fatigue Cracking of Three-Quarter-Inch Pipe Nipple Results in Gas Release
An offshore gas release followed fatigue failure of a threaded ¾-inch pipe nipple on a compressor suction scrubber, prompting platform shut-in and personnel muster. The alert discusses possible installation stresses, vibration and unsupported bridle weight, and recommends considering structural support, proper tightening, regular inspection, vibration monitoring and maintained dampers.
- 20256 Jun
BSEE Safety Alert 500 - Dropped Steel Plate Due to Defective Lifting Device and Inadequate Hazard Analysis
A steel plate released from a worn magnetic lifter during drilling operations, falling approximately 47 inches onto two workers’ left feet. The alert identifies inadequate task hazard analysis and reluctance to stop work. Recommendations address lifting-device inspection, functional testing, safety communication, and electromagnet power stability and duty-cycle limits.
- 202522 May
EC175 B Rotor Blade Failures at Offshore Platform During Strong Winds
Investigates rotor blade failures on EC175 B G-MCSH at the Elgin platform during strong winds. A partially seized rotor brake prevented blade securing; local vertical airflow was considered to exacerbate blade sailing. The report examines maintenance, securing equipment, helideck airflow, wind reporting and flight recorder anomalies, and makes six safety recommendations.
- 2025May
Risk from height adjustable display screen stands in schools and other education settings
This HSE safety notice addresses impact and crushing risks from motorised height-adjustable display mounts in education settings, including incidents injuring young children. It explains instability, unsuitable fixings and obstructed movement, and sets out responsibilities for users, installers, purchasers and suppliers, emphasising risk assessment, anti-collision protection and restricted access to controls.
- 20254 Apr
BSEE Safety Alert 499 - Failed Umbilical Termination Results in Dropped Remotely Operated Vehicle (ROV)
An ROV dropped to the seafloor during recovery when its umbilical termination failed at a cursor transition point. Faulty resin and improperly positioned armoured strands were identified despite a previous successful pull test. BSEE recommends termination inspection procedures, training and pre-job connection checks. No personnel harm or seabed asset damage occurred.
- 202519 Mar
Acetylene gas explosion
Two engineers setting up oxygen and acetylene cylinders experienced a small explosion and hose fire, leaving one with first-degree burns. The flash identifies inadequate flashback protection, bent hoses, faulty crimps, absent hot-work authorisation and unsuitable protective equipment. Lessons address arrestor placement and checking components after a flashback.
- 202519 Mar
Injuries during lifting operations
Two lifting incidents caused minor injuries: crane two-blocking parted a wire and dropped lifting gear, while excess loading of a soft sling released a shackle during component alignment. Common findings concerned operator competence, supervision and line-of-fire awareness. Lessons emphasise experienced personnel, active supervision and keeping people clear of danger.
- 202527 Feb
Grounding and capsize of creel fishing vessel Lexi Rose with loss of 1 life
Investigation into the fatal grounding and capsize of Lexi Rose at Melrose Point. The report examines likely outboard lower-unit impact damage, loss of propulsion in swell, and constraints on single-handed emergency actions. It discusses distress radio use, anchoring limitations and the survival benefits of wearing a personal flotation device.
- 202526 Feb
Contact with pier by paddle steamer Waverley
Investigation of Waverley’s contact with Brodick pier on 3 September 2020, injuring 24 passengers and crew. Engine dead centre delayed astern propulsion. The report examines piston valve securing, lost engineering expertise, informal training and unassessed closed-end berthing risks. It records subsequent maintenance and operational changes, with no recommendations made.
- 202521 Feb
Lifeboat Unexpectedly Descends
In November 2024, a lifeboat on a North Sea drilling unit descended unexpectedly from its stowed position following winch failure during severe weather. Crew attempts to stop cable deployment were followed by failure of the stern wire, then the bow wire. The craft drifted away and was subsequently recovered.
- 202520 Feb
MSF: A broken stretcher could have led to injury
A stretcher fractured during transfer to a hospital bed following a vessel medevac, without further injury to the patient. Investigation found it was 13 years old; its manufacturer advised replacement after five years for that type. The flash recommends examination and replacement where shelf life has expired, noting manufacturer-dependent limitations.
- 20256 Feb
MAIB: Step-ladder failure (LTI)
A crew member fell when a folding stepladder’s top-step support welds failed, sustaining back and head injuries. MAIB considered pre-existing damage almost certain; the ladder was not overloaded. The flash stresses thorough pre-use inspection, equipment upkeep and a just culture supporting honest incident reporting.
- 20256 Feb
MAIB: Vessel cook injured by spillage of burning cooking oil
A cook aboard an offshore support vessel suffered severe burns when wet chemical suppression displaced burning oil from a shallow-sided gyro pan. A faulty thermostat and unsuitable use for deep-frying featured in the incident. Lessons address hazardous work-arounds, regular maintenance, testing overheated appliances and following manufacturers’ guidance.
- 202527 Jan
BSEE Safety Alert 495 - Turbine Generator Exhaust Silencer Failure
An offshore turbine generator silencer released perforated steel onto the deck after shutdown, with some pieces weighing up to 44 pounds. The alert describes 18 years of service and limited inspection coverage. BSEE recommends considering comprehensive exhaust-component maintenance, whole-silencer inspections, design assurance and dropped-object prevention measures where appropriate.
- 202523 Jan
Safety Flashes – a review of 2024
Reviews IMCA’s 2024 Safety Flashes, covering 88 member-shared events and 33 drawn from public sources. Highlights line-of-fire exposure, hand and finger injuries, bypassed safety controls, lifting, working at height, equipment failures and dropped objects. Includes a reference list of the year’s flashes and reinforces stop-work authority.
- 202417 Dec
High potential: spontaneous opening of hydraulic release shackle (HRS) pin
A hydraulic release shackle opened during vessel lifting operations, dropping approximately 4–5 metres and remaining suspended by its hydraulic hose. Nobody was harmed. Subsequent checks identified damage to two shackles. Findings highlighted an unassessed change to the hydraulic set-up, procedural non-compliance and inadequate communication; lessons emphasise change control and stopping work when uncertain.
- 202417 Dec
NTSB: diesel generator engine failure
An offshore supply vessel suffered diesel generator failure and an engine-room fire during post-maintenance sea trials. An incorrectly sized replacement main bearing reduced lubrication pressure to adjacent connecting rod bearings. Effective crew firefighting limited the spread. The flash stresses identifying and documenting removed component part numbers to support correct replacement selection.
- 202417 Dec
Structural failure of rescue boat
An unattended rescue boat failed structurally on its davit, dropping its hull into the sea without injuries. Excessive manual cranking forces, shock absorber maintenance and pressure issues, unclear instructions and unsuitable stowage were identified. Actions included inspections, torque-controlled cranking, davit modification and improved equipment acceptance arrangements.
- 202417 Dec
Sudden disconnection of pressurised hose
During vessel maintenance, a hose disconnected while residual water was pumped from a cofferdam at approximately 5.9–6 bar. Nobody was struck or injured. The flash identifies absent whip arrestors, missed pre-use checks and an apparently worn coupling, and recommends secondary securing, coupling inspection and sufficient onboard spares.
- 202412 Dec
Engine room fire on board ro-ro passenger ferry Stena Europe
Investigation of Stena Europe’s engine room fire while approaching Fishguard. Pressurised fuel escaped from a flange joint and ignited on exposed exhaust surfaces. The report examines recurring leaks, incomplete flange modifications, deficient insulation, maintenance and reporting weaknesses, firefighting response, and thermal imaging for detecting hazardous hot spots.
- 202427 Nov
NTSB: Crane wire failure
This safety flash recounts a crane wire failure during offloading of a 69-tonne wind turbine nacelle into a cargo vessel’s hold. Undetected corrosion and strand-wire wear were the probable cause. It explains how grease concealed corrosion despite routine inspections and maintenance, and highlights inspection requirements and condition-dependent wire replacement intervals.
- 202411 Nov
NTSB: Fire on vessel – escaped exhaust gases
This safety flash describes a towing-vessel fire on the Gulf Intracoastal Waterway. The NTSB suggested that undetected muffler cracks let hot exhaust gases ignite wooden accommodation structures, with combustible furnishings contributing to damage. The crew escaped safely, but the vessel was destroyed. Inspection of welds and potential weak points is suggested.
- 202411 Nov
Snagging hazards
Two unrelated snagging incidents involved a cargo container catching on a deck light guard and a lifejacket strap engaging a tug’s anchor clutch. Slings parted in the first case; the anchor chain parted in the second. Lessons address visibility, crew communication, winch pre-use inspections and adequately sized clutch securing pins.
- 202424 Oct
Dropped sheave and clump weight
During wind turbine monopile installation, a clump weight was hoisted into a sheave, breaking it and dropping both components onto the deck. No injuries occurred, but equipment damage and a hydraulic oil spill resulted. The flash highlights simultaneous winch operation, inadequate observation, absent automatic stops and lessons on lift oversight and stopping unsafe work.
- 202424 Oct
Main Crane failure during load test
An offshore crane overload test ended with broken main-block wires and two cargo barges falling into the water. Uneven drum torque followed clutch-pad slipping, linked to inadequate burnishing of new pads. The vessel listed approximately nine degrees; nobody was injured. Lessons cover burnishing, torque testing, planned maintenance and crane FMEA review.
- 202414 Oct
Near Miss: Smoke and fire on Main Engine Exhaust
During sea trials after docking, smoke and fire emerged at an engine’s turbocharger flange. A damaged, incorrect gasket rated below 300°C had been fitted instead of one resistant above 500°C. The flash highlights spare-part specification checks and the visible wire mesh distinguishing gaskets designed for temperatures above 500°C.
- 202414 Oct
NTSB: Fire on vessel – escaped exhaust gases
This safety flash describes a towing-vessel fire on the Gulf Intracoastal Waterway. The NTSB suggested that undetected muffler cracks released exhaust gases that ignited accommodation woodwork; combustible furnishings contributed to damage. The crew evacuated safely, but the vessel was destroyed. Readers are asked to consider inspecting exhaust-system welds and other weak points.
- 20244 Sep
MODU mooring line failure
This safety flash describes failure of one of eight mooring lines securing a MODU during drilling. The unit moved approximately 12 m and tilted 2–3 degrees before thrusters and ballasting restored its position. The account refers to Marine Safety Forum Safety Flash 12-31.
- 202429 Aug
Dropped object during cable trans-spooling
During cable trans-spooling ashore, a failed connection bolt released a 5.7 kg roller, which fell 8 m and struck a worker’s shoulder. The flash examines inadequate risk assessments, missing secondary retention, changed offloading arrangements and uncommunicated cable wax, emphasising management of change and better communication.
- 202429 Aug
Parted tag line caused damage during lifting operations
A tag line failed under excessive tension during crane recovery of a 2.4-tonne LiDAR buoy to a vessel deck. Unexpected buoy movement struck a worker without injury and damaged the buoy and vessel. The flash examines deficient recovery procedures, lift planning, briefing, supervision and training, and records corrective planning and training actions.
- 2024Aug
CHIRP Superyacht FEEDBACK 7 (August 2024)
Six superyacht reports examine tender lifting-point failure, fouled anchors near a lee shore, an open shell door, a fall during window cleaning and unsafe diving arrangements. Commentary emphasises thorough risk assessment, properly completed work permits, reliable equipment, crew communication and isolation during underwater maintenance.
- 202431 Jul
Fast Rescue Boat (FRC) comes close to falling off in a dry dock
During an annual rescue-craft and davit test aboard a vessel in dry dock, an unreleased lashing caused the craft to tip into a railing and its stern to become stuck. Hydraulic piping burst under abnormal pressure. Nobody was injured. The flash recommends pre-launch checks, clearer communication and detailed launch and retrieval procedures.
- 202431 Jul
MAIB: LTI – a wedge shattered causing injury
A cargo-vessel crew member struck a hatch-cover securing wedge with a sledgehammer. The wedge shattered, and a fragment penetrated their right leg below the knee, resulting in three days off work. The flash prompts equipment and work-area checks and consideration of force, swing alignment and direction.
- 202424 Jul
Rubber bumper stopper detached from mounting bracket and falls 20m
An offshore derrick elevator’s rubber bumper stopper detached from its mounting bracket and fell 20 m onto the Hydraracker upper level. The 600 g component was assessed using the DROPS calculator as potentially fatal. No personnel were in the area and no injuries were reported.
- 202424 Jul
Uncontrolled release of lower marine riser package
Following unlatching from the BOP ahead of pending weather, an uncontrolled riser-string release left the lower marine riser package on the seabed. Five droop hoses initially connected the upright string to the rig, then failed, allowing it to fall away from infrastructure. No personnel injuries or subsea asset damage were reported.
- 202416 Jul
Bunker hose damaged during connection
During offshore bunkering, a hose secured to a supply vessel’s aft bollard remained attached to another vessel’s crane. Relative vessel movement stretched and damaged its outer layer, prompting cancellation. The flash describes a risk assessment review and bridge communication requirements to avoid tying off crane-connected hoses where possible.
- 202416 Jul
Loss of pressure to diver’s primary air supply
A diver was recovered safely after primary air supply pressure fell. Surface testing traced regulator sticking to dried lubricant restricting the sensing assembly, particularly during light breathing. The flash discusses supervisory intervention, insufficient internal servicing, regulator rotation and increased six-monthly maintenance, testing and cleaning.
- 20242 Jul
ROV dropped to seabed
An ROV fell to the seabed after recovery-system latching problems and umbilical separation. Cold, dirty grease slowed the latch, while the operator could not see the locked-position indicator. The flash identifies maintenance, procedure and supervision shortcomings and describes cleaning, functional verification and renewed procedural assurance.
- 202418 Jun
Dropped welding fume extraction hood
During vessel pipelay, a 215 kg welding fume extraction hood fell and struck a crew member. Misunderstood installation drawings left it supported by a single bolt, which cracked and sheared under dynamic loading. The flash highlights modification control, securing arrangements and omissions from DROPS registers and inspections.
- 20243 Jun
Dropped lifting beam due to parted soft strop
A four-tonne lifting beam fell 50 cm to deck when a one-tonne soft strop parted during relocation. The account identifies an unchecked load weight and a sharp pad-eye edge, with no injuries reported. Actions address edge protection, alternative rigging, verification of load weight and lifting capacity, and stopping uncertain work.
- 202430 May
2024-01 64 Investigation of March 25, 2022, Hydraulic Workover Unit Failure Fatality
BSEE investigates a fatal hydraulic workover unit collapse at Main Pass Block 64 Platform #19. Severely corroded structural casing buckled after crane support was removed, and a worker tied to the unit was pulled into the water. Findings examine load assessment, Anchor Spool stabilisation, oversized equipment and unclear operator–contractor responsibilities.
- 202422 May
Engine failure and subsequent engine room fire
A diesel generator failed catastrophically aboard an offshore-working vessel, ejecting components and starting an engine-room fire. Nobody was harmed. The flash reviews effective Hi-Fog suppression, protective equipment and emergency leadership, and recommends procedural familiarity and revised response communications. It also suggests thermal imaging support and fire-station booklets.
- 2024May
CHIRP Superyacht FEEDBACK 6 (Summer 2024)
This superyacht incident digest examines watertight door failures, a starting battery explosion, a galley fire, unprotected window cleaning and steering loss. Commentary addresses alarm visibility, towing checks, battery maintenance, heat lamp safeguards, crew numbers and the independence of the designated person ashore.
- 202425 Apr
Loss of control of powerboat Awesome with loss of 2 lives
MAIB investigates Awesome’s fatal loss of control near Little Thatch Island in the British Virgin Islands. A worn universal joint failed and the flailing drive shaft severed a hydraulic steering hose. The report examines lubrication, stepped-hull behaviour, seating, flotation devices, kill cords and rescue actions. Two occupants drowned; no recommendations were made.
- 202416 Apr
Main bell wire rope damaged
During bell recovery after a saturation dive, a broken outer wire rope strand lifted a proximity switch bracket into the sheave, damaging the main bell wire. Operators stopped recovery and freed the bracket. The flash describes design shortcomings, sensor relocation, cutting back damaged wire, a witnessed load test and an empty-bell trial.
- 202416 Apr
Main bell wire rope failed destructive test
A diving support vessel’s main bell wire rope failed annual destructive testing after 245 bell runs. Investigation linked reduced load-bearing capacity to poor ductility from strain ageing and identified procurement outside company integrity arrangements. The flash calls for compliance with wire rope integrity requirements and oversight of chartered third-party vessels.
- 202427 Mar
Implosion of chemical tank
A chemical tank on a vessel imploded after pumping created a vacuum with its manual air inlet valve unopened. Around two cubic metres of monoethylene glycol spilled onto the deck and into the sea; nobody was injured. The flash examines unfamiliar replacement equipment, supplier assurance, documentation, familiarisation and management of change.
- 202427 Mar
Loss of heading control on an FPU during diving operations
A floating production unit lost heading control during diving operations when a steering pump failed to start automatically during greasing. Only one thruster was available. Divers were recovered safely. The flash examines maintenance coordination, work permits, risk assessment and communication, and calls for changes to the company SIMOPS matrix.
- 202427 Mar
Person injured when chain hoist container failed at securing point
A chain-hoist container weighing approximately 30 kg fell around 0.8 m onto a crew member during pipelaying clamp adjustment, causing bruising and contusion. The flash identifies an inadequately engineered modification, omitted secondary retention and incomplete inspection detail, and calls for change management, improved maintenance inspections and secondary retention where required.
- 202427 Feb
Pipeline End Manifold yoke dropped from 45° position
A vessel rigging team released one restraint while adjusting a pipeline end manifold yoke held at 45°, causing the opposite cargo strap to fail and the yoke to fall horizontally. Two nearby workers were uninjured. Learning addresses unsuitable straps, engineered securing, task risk assessment and management of change.
- 202427 Feb
UK HSE: Crane boom collapse
This safety flash describes a crane boom collapse during preparations to recover a faulty submersible pump from an offshore rig. Debris struck a supply vessel and a snagged cement hose ruptured. The investigation identified an unchecked, incorrectly set limit switch, overridden joystick safety mechanisms and defective safety management. Nobody was injured.
- 202419 Feb
USCG: wire rope hazard management – dropped turbine nacelle
A vessel crane’s wire rope failed during offloading, dropping a 69-ton wind turbine nacelle 2.2 m onto the deck near personnel. Corrosion, wear and monotonic ductile overload were identified. The flash relays USCG recommendations on load testing, lubrication, maintenance tracking, earlier rope renewal, visual inspection and crane-operator training.
- 202419 Feb
Vessel damaged in contact with platform
A crew transfer vessel struck a fixed platform after its port inner main engine remained driving forward. Worn carbon brushes caused the propulsion actuator to freeze. Control was regained too late to prevent wheelhouse damage; nobody was injured. Actions included fleet motor checks, revised maintenance arrangements and renewed emphasis on loss-of-power drills.
- 202412 Feb
Failure of self-righting frame on Fast Rescue Craft (FRC)
A fast rescue craft lost its self-righting frame during a rescue drill while travelling at approximately 15 knots. Securing arrangements showed stress and galvanic corrosion despite a recent visual inspection. The flash highlights periodic integrity inspections, potentially involving frame removal, and records recovery communication and repairs to manufacturer specifications.
- 202412 Feb
Fall Protection – Defective Safety Harness
A technician noticed an abnormality in a safety harness during vessel back-deck equipment recovery, prompting an immediate stop. Inspection revealed defects around the plastic back pad. The flash discusses inspection competence, missing evidence of pre-use checks, maintenance and storage shortcomings, and actions covering visual inspection, equipment registers and unserviceable harnesses.
- 20247 Feb
Safety warning issued following a chain failure on scallop dredger Honeybourne III with loss of 1 life
This safety bulletin examines a fatal deckhand injury aboard Honeybourne III after a quick-release chain failed during dredging gear retrieval. It discusses wear and inspection difficulties where chains pass over static derrick-head pins, alternative release arrangements, and recommendations for urgent documented risk assessment, mitigation and crew communication.
- 202425 Jan
Fingerboard Locking Bolt Failure Leads to Near Miss Incident
A drilling-rig near miss involved six pipe stands falling from a fingerboard during cement line pressure testing. Investigators identified adverse weather and poor fingerboard design as main causes. The alert describes improved bolt retention and recommends that operators consider inspections, secure pipe racking, manufacturer updates and Red Zone management where required.
- 202425 Jan
Safety Alert-Fingerboard Failure Leads to Near Miss
Six pipe stands fell from a drilling rig fingerboard during cement-line pressure testing, with nobody on the rig floor. Investigators identified adverse weather and poor fingerboard design as main causes. The alert describes an enhanced locking arrangement and recommends considering bolt inspections, improved securing mechanisms and Red Zone management where required.
- 202422 Jan
MSF: LTI – Engineer scalded
An engineer aboard a platform supply vessel suffered scalding burns when a cooling-water compensator burst during refilling after repair. The flash discusses sudden pressure increase, unsuitable temperature rating, likely material degradation and potentially inadequate pressure relief. Corrective measures address compensator suitability, installation checks, cooling before refilling and planned inspection and maintenance.
- 20249 Jan
Chain hoist paid out unsupervised near running main engine
An unattended electric chain hoist aboard a vessel paid out onto a running main engine near the generator drive shaft. A defective pendant button issued a continuous payout command. The flash examines operator assumptions, unsecured stowage and the unused emergency stop, and recommends checks, isolation review and maintenance review.
- 2024
CHIRP Maritime FEEDBACK 76 (Autumn 2024)
This maritime digest examines unauthorised enclosed-space entry, tug propulsion failure during LNG berthing, suspected officer fatigue, rotating-shaft hazards, inadequate provisions, deficient dynamic-positioning capability and departure in strong winds. Case commentary contrasts effective teamwork and stop-work intervention with commercial pressure and weak safety culture, highlighting entry permits, towing configuration and position-reference requirements.
- 2024
MAIB Safety Digest 1/2024
This marine accident digest presents lessons from merchant shipping, commercial fishing and recreational craft incidents. Cases examine pilot ladders, navigation, mooring machinery, suspended loads, falls and recovery from the water. Reproduced bulletins and flyers address RIB passenger injuries, dredging-chain failures, fire-extinguishing systems and flotation-device suitability.
- 2024
MAIB Safety Digest 2/2024
A collection of marine accident accounts and preventive lessons spanning merchant shipping, commercial fishing and recreational boating. Cases examine steering and propulsion failures, mooring injuries, grounding, fire, flooding and capsize. Lessons address maintenance, navigation, risk assessment, equipment interfaces, watertight integrity and emergency evacuation, alongside reproduced safety bulletins and flyers.