Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude

Child Classifications

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• B63B 39/005
• B63B 39/02 to decrease vessel movements by displacement of masses
• B63B 39/04 to decrease vessel movements by using gyroscopes directly
• B63B 39/06 to decrease vessel movements by using foils acting on ambient water (constructional aspects of bilge keels B63B3/44 )
• B63B 39/08 to decrease vessel movements by using auxiliary jets or propellers (for steering or dynamic anchoring B63H25/00)
• B63B 39/10 to decrease vessel movements by damping the waves, e.g. by pouring oil on water
• B63B 39/12 for indicating draught or load
• B63B 39/14 for indicating inclination or duration of roll