Deck wetness and ship efficiency

Article type: Research Article

Authors: Aertssen, G.^{; *}

Affiliations: University of Ghent, Belgium

Note: [*] Emeritus Professor; President Centre Beige de Recherches Navales (retired).

Abstract: Water shipment is the enemy number 1 of full-loaded ships in rough seas. Two diagrams, showing speed related to sea state, in head seas and in beam seas, are given for seven ships, ranging from the fast cross-channel ship to the large container-ship, and for each ship information is added, not only on deck wetness, but also on pitching, accelerations, slamming and racing. The actual speed loss is compared with a estimated loss deduced either from a conventional diagram or from a formula, which might well be used at the design stage of the ship. Some guidance on how to prevent wetness is included.

DOI: 10.3233/ISP-1977-2428002

Journal: International Shipbuilding Progress, vol. 24, no. 280, pp. 337-345, 1977