Sperry stabiliser
1.fin shaft,
2.fin shaft housing,
3.fin,
4,flap,
5.guiding rail,
6.pantograpMc linkage (of the rigging mechanism) (fin locked in its rigged out position),
7.tilt cylinder mechanism,
8.limit-stop and fin “repeat back” assembly (used to take the pump “off stroke” as the tilt cylinder approaches its limits of travel),
9.link to the hydraulic unit,
10.single-ended cylinder (of the rigging mechanism),
11.crosshead slide,
12.tilt crank arm,
13.bracket,
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