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Classes of tugs
Proportions and hull form
14 other sections not shown
amidships angle approved arranged auxiliaries barge beams bilge blade block coefficient bmep bollard pull bridge bulkhead bulwark cabin calculation capstan carried cavitation centreline Chart for Type coefficient constant craft deck deckhouse diesel diesel engine dimensions draught efficiency engine room estimated factor fairlead Figure fitted fore formula forward Free running free speed gearbox give given hook horsepower hull hydroconic inch diameter inertia keel knots Kort nozzle length Lloyd's machinery main engine mast method naval architecture necessary normal normal force nozzle rudder obtained pipes plate possible propeller d a r pump radius radius of gyration rail resistance revolutions rope screw shaft ship side space stability steel stern suitable tank teak thrust tons torque tow-hook tow-rope towing trials tugs of class tumblehome two-stroke Type B propeller usually valves vessel Voith weight welded windlass