Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B63
SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
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B63B
SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
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43/00
Improving safety of vessels, e.g. damage control, not otherwise provided for
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B63B43/02
reducing risk of capsizing or sinking
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B63B43/06
using ballast tanks
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