Results of Karistads Mekaniska Werkstad (Sweden) tests of model representing 60,000-ton dw tanker; they show -- thrust from bow thruster jet does not change with speed; however, pressure distribution on hull is changed by jet so that resulting side force and turning moment vary with ship speed; with 1500 hp bow thruster, turning moment decreases to 50% at 4 knots and increases again for higher speeds, reaches zero at 15 knots; maneuverability is greater with both bow thruster and rudder than for ship with rudder only; at 8 knots turning moment for bow thruster and rudder is 28% higher than for rudder only.
Effectiveness of bow thruster at low and medium ship speeds
Int Shipbldg Progress
International Shipbuilding Progress ; 14 , n 156
1967
4 pages
Aufsatz (Zeitschrift)
Englisch
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The effectiveness of a bow thruster at low and medium ship speeds
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