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What is it?

The LHD 1 class ships have a flat keel, which results in additional rudder use to maintain heading and directional stability.  Tests with other ship types have shown that installing appendages, such as fins, will improve the steering – provided that the appendages do not overly increase the resistance.

How does it work?

Fixed-fin stabilizers installed outboard the rudders will improve the directional stability without sacrificing maneuverability.

What will it accomplish?

Installing fixed fins will correct excessive rudder movement and directional stability issues for the LHD 1 Class ships and result in improved course keeping and fuel savings.