How Gy­ros Work

Power & Motor Yacht - - BOATYARD -

While I was writ­ing this col­umn, sev­eral peo­ple asked me if in­stalling a Sea­keeper would af­fect steer­ing by pre­vent­ing the boat from heel­ing into a turn (or out of it, for some dis­place­ment hulls). And if it did, how would that af­fect the boat’s han­dling? Funny, no­body asked the same ques­tion about fin sta­bi­liz­ers, which also sense heel­ing and ad­just the fins ap­pro­pri­ately. But maybe it’s be­cause gy­rosta­bi­liz­ers have that “high tech” thing go­ing on.

I asked Bob John­stone of MJM Yachts, who has spent a lot of time run­ning with Sea­keep­ers. He said it had no ef­fect what­so­ever. Then I asked the en­gi­neers at Sea­keeper, who wrote back: “Af­ter run­ning ex­ten­sive tests on a wide range of ves­sels we have found that Sea­keeper does not have any mea­sur­able ef­fect on hard turns or steer­ing while the boat is un­der way. The sim­pli­fied ex­pla­na­tion for this is that al­though the Sea­keeper will mo­men­tar­ily try to re­sist the move­ment, the boat eas­ily over­pow­ers it and the sphere will quickly

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