Wednesday, November 08, 2006

Sister Vessels

Yesterday we received a letter from the DfT purporting to answer our previous queries. We will publish it on this site and comment on its contents shortly. For starters, we are addressing the department’s inference that there was no design defect on the Gaul, because the sister vessels, with the same design, did not sink.
“… it should be remembered that the FV Gaul and her sister ships were built under Lloyd’s approval, with the same duff and offal chutes design. On the sister ships these chutes survived under similar conditions and were retained until the end of their service.” (Letter from the DfT dated 07.11.06)
The above comments imply that the duff and offal chutes gave satisfactory trouble free service throughout the lives of the sister vessels. A closer look into this matter shows that, in fact, this is not quite the case:
The Gaul had three sister vessels: Arab, Kelt and Kurd. These vessels are still in service, but none is currently working as a trawler.
Available records show:
1. That the Kappin (ex Arab) is currently working as a fish processing factory freezer ship off the Greenland coast.
The Arab was sold in 1983 and converted into a support depot ship for submersibles; in 1984 it was converted back into a stern trawler. The vessel continued to work as a stern trawler until early 2006 when it was converted into a fish factory ship.
A very good photo of this vessel can be viewed at:
http://www.shipspotting.com/modules/myalbum/photo.php?lid=235426
The vessel was visited in 2003, by the retained experts for the RFI for the purposes of obtaining information that could be of use to the Investigation. The vessels crew were also quizzed at that time (ref. Technical paper presented by the retained experts ‘The loss of the MFV Gaul’ - http://www.bctq.com/isleman.html)
“As part of the RFI, a party visited the FV KAPPIN, a sister vessel to GAUL still fishing from the Faroes. Discussion with the crew revealed that flooding of the factory deck was a recurrent problem. This had been dealt with in part by installing deep well pumps and blanking off the forward offal chute. Even so, crew recounted serious flooding incidents as a direct result of water coming through the aft duff chute. Fortunately this was never catastrophic.”
Does this mean that the crew of the Kappin have also been leaving the chute flaps and covers open?
2. That the Bergen Surveyor (ex Kelt) is currently working as a seismic survey vessel for Norwegian owners.
The Kelt was sold in 1982 and initially converted into a support depot ship for submersibles; in 1997 it was converted into a seismic survey vessel.
A very good photo of this vessel can be viewed at:
http://www.shipspotting.com/modules/myalbum/photo.php?lid=63966
It is most likely that the duff and offal chute openings would have been removed at the time of time of its initial conversion in 1982 (support vessels do not need arrangements for the discharge of duff and offal). The picture shows that, in its current guise, the chute openings are no longer present.
3. That the Southern Surveyor (ex Kurd) is currently working as a marine research vessel and is owned by the Australian Government. The factory deck on this vessel has been converted into a laboratory.
The Kurd was sold in 1983 and initially converted into a support depot ship for submersibles; in 1988 it was converted into a research vessel.
A very good photo of this vessel can be viewed at: http://www.marine.csiro.au/nationalfacility/images/1shipside_lge.jpg
It is most likely that the duff and offal chutes would have been removed at the time of its initial conversion in 1983. The picture above shows that, in its current guise, the chute openings are no longer present.

1 comment:

gadfly said...

Regarding the experts’ visit to FV Kappin in December 2003, the transcript of evidence for day 15 of the RFI gives details of discussions that took place with the Kappin’s Mate.
He advised that during the previous voyage, significant amounts of water had entered the factory space through the aft duff chute opening. He also indicated that he was aware of the ingress and had been monitoring the situation.

Additionally, the transcript shows that at the time of the experts’ visit, the counter-balanced flap in the duff chute was found to be movable (so it was not seized).

Thus:

If this non-return flap was operable during the last voyage and significant amounts of water had been able to enter the factory space, then this could only have happened if:

1. The hinged inner covers were open

2. The movable counterbalanced flap (designed to be the principal ‘barrier’ against the sea and which would normally be closed due to gravity) must have been open or forced open for the sea water to enter.

It is unfortunate that this important evidence was neither examined in depth nor followed up during the RFI…