TOWING TANKS, SEAKEEPING AND MANOEUVRING BASINS

MARINE DYNAMICS AND SHIP LABORATORY, CANADA NATIONAL RESEARCH COUNCIL, Bldg . M-22, OTTAWA, ONTARIO., K1A OR6. (613) 993-2288 Telex 053-3386

TOWING TANK No. 1 (1942)

DESCRIPTION OF CARRIAGES: 1 manned, motor driven TYPE OF DRIVE SYSTEM AND TOTAL POWER: modified Ward-Leonard , 150 kW MAXIMUM CARRIAGE SPEED: 8 m/s OTHER CAPABILITIES: vertical PMM can be fitted

WAVE GENERATION CAPABILITY : regular, length 2-15 m. slope 1-10 deg. WAVEMAKER TYPE AND EXTENT: pneumatic, 7.6 m wide BEACH TYPE AND LENGTH: 4 perforated panels on parabolic arc, 6 m WAVE MEASUREMENT: ultrasonic probes on carriage and tank walls

INSTRUMENTATION: minicomputer on carriage for data acquisition and on-line analysis. 48 analog and 16 digital channels, up to 1000 samples per second per channel. MODEL SIZE RANGE; ship lengths from 3 to 6.5 m floating structures from 0.5 to 2 m diameter MODEL TRACKING TECHNIQUES : propeller rpm adjusted manually, relative model position measured by ultrasonic probe TESTS PERFORMED: resistance & self-propulsion in calm water and waves. open water propeller tests and 3-D wake surveys. hydrodynamic forces on submersed bodies, foils, etc wave induced motions and loads on ships and floating and moored structures. upright and heeled sailing yacht tests.

PUBLISHED DESCRIPTION: 14th ITTC, 15th ATTC, NRC Report MB-251