Bow bulbs on thin fast ships

Michel EBERSOLT, MERIMAR - Paris
Alain HÉMON, MERIMAR - Paris

The bulbous bow is now accepted for fast merchant vessels. The characteristics of contemporary or " projected warships are reviewed, and compared .with those of a recent merchant ship. Speed gains and power savings in calm seas are estimated for warships. In addition to this advantage, the Tango code used in conjunction with seakeeping towing tank trials predicts a reduced pitching, and a enhanced operational efficiency, in particular for the aircraft-carrier Charles de"Gaulle.

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