Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
B63H—MARINE PROPULSION OR STEERING
B63H1/00—Propulsive elements directly acting on water
B63H1/30—Propulsive elements directly acting on water of non-rotary type
B63H1/34—Propulsive elements directly acting on water of non-rotary type of endless-track type
B—PERFORMING OPERATIONS; TRANSPORTING
B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
B63H—MARINE PROPULSION OR STEERING
B63H1/00—Propulsive elements directly acting on water
B63H1/30—Propulsive elements directly acting on water of non-rotary type
B63H1/34—Propulsive elements directly acting on water of non-rotary type of endless-track type
B63H2001/342—Propulsive elements directly acting on water of non-rotary type of endless-track type with tracks substantially parallel to propulsive direction
B63H2001/344—Propulsive elements directly acting on water of non-rotary type of endless-track type with tracks substantially parallel to propulsive direction having paddles mounted in fixed relation to tracks, or to track members