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Precis File
SHIP NAME: Berge Vanga KEY: NUM. ENTRIES: 3
source SIS83
type D
volume
material
dead 40
link

40 killed, sailed Sepetiba Bay on 24th for Oita, last report nw of Tristan da Cunha


source http://www.gexcon.com/index.php
type D
volume
material
dead
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On December 30, 1975, the oil/ore carrier M/S Berge Istra (Solberg, 1981) sank in the Molucca. Sea. Two of the crew were rescued. They reported a rapid series of three massive explosions followed by the immediate sinking of the ship. In October, 1979, the sister ship M/S "Berge Vanga" disappeared in the Atlantic Ocean. Practically nothing is known about that incident. No one was rescued.

The rapid sinking of the Berge Istra indicates that a gas explosion in the double bottom of the ship ripped the ship structure open, and water flooded the double deck and the engine room.


source CTX
type D
volume
material
dead 40
link

These ships were VLCC-sized OBO's; ships that can handle both oil and dry cargo. They had a double hull structure that is very similar to a double hull tankers. The double bottom is for all purposes the same.

A Norwegian Master who had served on these ships told djw1 they did have cargo leaks into the double bottom. Surveyors check for such leaks by shining a mirror down the ullage hole into the double bottom when it has ballast in it. If there is any oil on top of the ballast water, a trained eye can see it in the beam of sunlight. To fool the surveyors, the crew would put a large bucket of water under the ullage hole. The surveyor's mirror would see only the clean water in the bucket.

After the Vanga disappeared, Bergesen the owner took all the sisterships out of the crude oil trade. Henceforth, they traded only as dry bulk carrier. A little monument to these two crews used to stand in the entrance of the Bergesen office. Don't know if it is still there.

These two casualties indicate the hazard associated with cracks from double hull cargo tanks to double hull ballast tanks is real. Double hulls have already killed at least 80 people.

Woinin says Vanga was loaded with 108,000 tons iron ore which is a little strange, since the ship could load 180,000 tons or more. Maybe a typo, but accepting this figure for now. Need to confirm.