3.Hunting gear mechanism

In one word it is a feed back mechanism

Why spring links are incorporated in the hunting gear

1.       The spring called buffer spring is incorporated in the hunting gear links to take up any excess movement beyond the maximum stroke of the pump. This extra movement is stored by the compressed spring and reset when hunting gear approaches the no-effect point to prevent the mechanical damage of the pump.

2.       Also buffer spring will take up the shock movement of rudder due to heavy sea, thus preventing excessive hunting action of pump.