The “Cappuccino Effect”

Recently the west of England P&I released a Loss Prevention Bulletin on the “Cappuccino Effect” due to a recent bunker dispute involving a vessel and a bunker supplier. The vessel, a bulk carrier, arrived in Singapore and began to bunker 900 tonnes of high sulphur fuel oil. The crew was alerted to the fact that something was wrong by the rattling of the float valves situated inside the fuel tank vent head bonnets. It was found that air was escaping from the vents at a greater rate than would normally be expected. In addition, the bunker supply hose lying on deck was seen to be jerking violently.

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