SHIP HANDLING IN HEAD SEAS

Code No: 661

Video Running Time: 32 minutes

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It is well known that when a ship is sailing into head seas it can be subjected to severe shocks and violent ship motions. Experience can teach seafarers how to handle such sea conditions but having knowledge based on reliable and proven handling techniques can make for safer encounters with head seas.

This video begins by explaining the motions experienced by a ship moving in a seaway and the stresses that are induced on the hull. Such stresses can be at their worst in head seas. The resultant pitching motion can have the greatest influence on the safety of the ship.

The video also looks at the effects of slamming, shipping water and propeller racing and makes recommendations about how to reduce these undesirable and sometimes dangerous effects.

Shipping seas can cause severe damage to deck equipment and hatch covers. Damaged hatch covers can allow ingress of water.

When a ship is moving into head seas slamming can occur. The video explains the various kinds of slamming and the resultant tendency to damage is explained. In extreme cases the slamming can cause a collapse of the hull structure. Detailed quantitative advice on how to reduce slamming is given.