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

Introduced: September 1968

Additional Content IPC

Pitch The rotary motion of a vessel about its transverse axis. Roll The rotary movement of a vessel about its longitudinal axis.

Of 8 combined children, 7 exist in both systems.

1 codes are CPC-only extensions.

2 shared codes have differing titles between IPC and CPC.

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B63B 39/005 CPC only CPC only
B63B 39/02 to decrease vessel movements by displacement of masses IPC+CPC Available in IPC and CPC
B63B 39/04 to decrease vessel movements by using gyroscopes directly IPC+CPC Available in IPC and CPC
B63B 39/06 to decrease vessel movements by using foils acting on ambient water (constructional aspects of bilge keels B63B3/44 ) +7 CPC IPC+CPC Available in IPC and CPC
B63B 39/08 to decrease vessel movements by using auxiliary jets or propellers (for steering or dynamic anchoring B63H25/00) IPC+CPC Available in IPC and CPC
B63B 39/10 to decrease vessel movements by damping the waves, e.g. by pouring oil on water +1 CPC IPC+CPC Available in IPC and CPC
B63B 39/12 for indicating draught or load IPC+CPC Available in IPC and CPC
B63B 39/14 for indicating inclination or duration of roll IPC+CPC Available in IPC and CPC

Class B63,2013–2023, worldwide · Source: EPO PATSTAT

Class B63,2013–2023, worldwide · Source: EPO PATSTAT