A trim tab (18, 204) hinged (19) at the bottom edge of a boat transom
(12, 179) is rotated into a position below the boat when the drive (58,
186) is in a lowest-most trim position, and is raised up, when the drive is
above a selected pickup trim position. A push tube (58) connected to the
motor (16) operates a push rod (49) and a trim tab (18). A
push bar (96, 97) is moved by the drive, causing pieces (104, 105)
to rotate trim tabs (18a). A fluidic slave cylinder (142)
is operated by a master cylinder (134) or by a pump (148) responding
to a position detector (150). Levers (164, 167) may be connected
by a cable (155). A hydraulic master cylinder (195) is disposed on
a part (186) of an outdrive that rotates for trim, its cylinder rod (200)
contacting a fixed part (184), driving fluid to a slave cylinder (201)
mounted on a fixed part (183) with its piston rod (202) moving a
trim tab (204).
