Page 17 - Layout 1

5 Cargo

• Maintenance of sounding and vent pipes.Causes:

• Liquefaction.The crew started to search for the origin of the leak and the

• Inherentdefect.bilge system was pressurised, all valves were closed and it
• Flooding of cargo holds (manhole covers for ballast andbecame obvious that several valves were leaking, because

bunker tanks not secured correctly after yard visit).water had entered the cargo hold through the bilge wells.

Some valves, indicated as closed on the ballast console panel,
were in fact open, which was caused by a faulty switch. No

5.2.3 Case studiesprevious testing or maintenance had been carried out on the

bilge system. The malfunction of the valves was likely caused
Wet damageby corrosion, which could have been aggravated by cargo

Wet damage case study 1residue as the vessel had been carrying coal on its three

previous trips.The bulk carrier was carrying coal. While at the discharge
The company’s internal investigation concluded that the port the vessel had to ballast cargo hold 2 to stay within the

incident was caused by the deteriorated condition of the quay’s air draft requirements. The water in cargo hold 2 was

valves in combination with a faulty switch.drained into one of the ballast tanks and then washed down.
The vessel had two pumps, which were used when cargo

hold 2 was washed down. Shortly afterwards the stevedores
Wet damage case study 2
noticed patches of water in cargo hold 1 and informed the
The bulk carrier was a newbuild and it was the vessel’s irst Master immediately. One hour later the Master stopped the

voyage after delivery. The vessel was loaded with wheat. cargo operation, by which time the water level had risen to

During the voyage the vessel experienced heavy weather,ive metres.

15www.swedishclub.com