As previously reported on Afloat.ie, the six-man crew of the crabber were rescued by coastguard helicopter some 13 miles off Malin Head on the morning of 7 October 2011 after the boat began taking on water overnight.
The vessel had left Greencastle Harbour in the early hours headed out to haul pots from the crab grounds off Malin Head when the crew discovered that the boat was down by the head. The pot store was found to be full of water, and attempts to pump it out made little difference.
The alarm was raised via radio with Malin Head Coast Guard before 9am and Irish Coast Guard helicopter Rescue 118 was tasked to the scene, lifting all six crew from the stricken vessel by 10.30am.
The report by the Marine Casualty Investigation Board (MCIB) found that corrosion within the Vivier tank system - used to preserve the boat's catch - was the likely source of the breach that led to the vessel taking on water.
Though an unusual thump or bump was noticed by the skipper on watch around 3am, nothing obvious was discovered, and neither the listing at the boat's head nor the flooding of the pot store - which had no bilge alarm - were noticed till after sunrise.
Aside from recommending the installation of bilge alarms for all compartments below the water line on fishing vessels, the report also called for consideration to include survey guidelines for Vivier systems, which are exposed to the same environment as the hull.
The full report on the Amy Jane incident is available to download via the link below.