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*ICEBREAKERS
1
Air bubbler systems
1
BUBBLES
1
CHANNELS(WATERWAYS)
1
COAST GUARD SHIPS
1
COMPRESSED AIR
1
FRICTION
1
GREAT LAKES
1
ICE
1
Ice and Permafrost
1
LAKE SUPERIOR
1
Marine Engineering
1
PERFORMANCE TESTS
1
RIVERS
1
SHIP HULLS
1
SURFACE ROUGHNESS
1
Saint Marys River(Michigan)
1
Snow
1
TUGBOATS
1
WTGB-101
1
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