Seakeeper 1: installed, on the water, and stable

Ben Stein

Ben Stein

Publisher of, passionate marine electronics enthusiast, 100-ton USCG master.

6 Responses

  1. Tom Petersen says:

    I am a Seakeeper believer! It is a game changer. I have a 65ft SeaRay with the gyros. There are two stories that illustrate when I really noticed how well it works. The first was when I had to take the boat from Marina Del Rey to Channel Islands Harbor. My wife, a fair-weather boater could not believe that when we arrived, I actually took her through Small Craft Advisory conditions. The Gyros kept the boat from rocking side to side which is when she gets concerned.

    The second time was shortly after that. A group of other boaters were with us on Santa Cruz Island. They were all at anchor and came to our boat to have lunch. We all marveled at looking how all the boats at anchor were being rocked so much by the swells that day…Except ours! Flat as a rock at anchor!

    When I explain to people that it doesn’t stop a boat from lifting with the sea, as that is pure physics, what it does is stop the rocking once a swell or wave passes, thus the boat remains very smooth.

    Believe me, a Seakeeper is now mandatory for new boats in our family.

  2. Mike says:

    Love the super in depth review of this. I am considering using a seakeeper for when I take my 1967 Cal 48 sailboat to the South Pacific where anchorages are often quite rolly. I have not heard about sailboats using a seakeeper yet but it seems like a great idea to make moorings and anchoring a lot more comfortable. Do you have thoughts on this? I already have 1,500amp hours of lithium aboard so I’m not worried about the power usage. I am a bit worried about the noise though. Is it loud for those aboard?Would other boats nearby hear it?

    • Ben Stein Ben Stein says:


      First the easy question: noise. As measured by a sound meter, the gyro is almost inaudible. It does introduce a slight hum into the boat. When I turn off the engine, stop the stereo, and listen, I can definitely hear it. I wouldn’t call it unpleasant or obtrusive, but it’s there. There’s absolutely no chance anyone in an anchorage would hear it. If you’re on one end of a 48 foot boat and it’s on the other, you won’t hear it. On my Carver, the Seakeeper was the other side of an engine room bulkhead from my stateroom. With the generator off and everything else shut down, I could hear it as it spun down, but only when the boat was totally shut down.

      I have never inquired of Seakeeper about performance on a sailboat. I don’t see any reason it wouldn’t work, though some of the details could be different between desired healing and the impact of a heavy keel on roll motions. I’d love to hear more if you do get in touch with them about the viability.

      -Ben S.

      • Mike says:

        Great to know that there’s not really a noise issue. The idea would be to use the stabilizer at anchor only, not while underway. Nevertheless I could imagine that the keel could impact the performance of a gyro stabilizer so it may not be a feasible idea. I’ll let you know what I find out about this.

  3. Butch Davis says:

    Where would it be installed in the sailboat?

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