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Anti-roll gyro systems: Discussion of different manufacturers

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Anti-roll gyro systems: Discussion of different manufacturers

Old 08-20-2018, 09:38 AM
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Default Anti-roll gyro systems: Discussion of different manufacturers

So I notice there are some advertising for different brands of boat gyros.
obviously, there is Seekeeper, Veem, and even Mitsubishi is getting in the game.
lets discuss advantages and disadvantages of the different boat gyro systems.
Old 08-20-2018, 02:02 PM
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Surprised no one cares to discuss these things.
Total game changer.
I wasn't aware there were even any other manufacturers other than Seakeeper. After an almost 8 hour run back from 5 days at Catalina Island with a quartering beam sea and my whole family being seasick, I figured I should start looking at possibly installing one in my Nordic Tug.
Apparently Veem's version is for more of the mega yachts and commercial/military applications.
The Seakeeper spins in a "vacuum" whereas the Mitsubishi doesn't. Mitsubishi claims theirs require less maintenance.
Seakeeper is making a DC version.
Curious if costs will ever reach a point that its very common for boats in the 25' to 30' range.
Ha, I feel like Im having a discussion with myself lol
Old 08-20-2018, 02:24 PM
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If I had any knowledge to add or a need for them I would for sure engage in this conversation. What is the price on something like this?
Old 08-20-2018, 02:30 PM
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Last time I checked in about 2011, a system for a 36’ express was well over $100k
Old 08-20-2018, 02:48 PM
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I don't think it's that no one cares. You gave less than five hours to a discussion regarding a expensive add on item for large (though less than they were) boats, that also required knowledge of more than the industry leader. I'd guess 10% or less of THT has a boat big enough to potentially have a Seakeeper, maybe 5% of those have boats with actual Seakeepers on them, and a tiny fraction have experience with multiple brands of stabilizing gyros. It's possible there is no one on this site that has substantial experience with the relative quality of the three variations you asked about.
Old 08-20-2018, 03:07 PM
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Seakeeper has a model for 27 ft boats. My wife loved it. We tested it at the boat show. I wonder what happens when they go wonky and make it unstable?
Old 08-20-2018, 03:10 PM
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Nothing to add, but would love to hear about competition. Is usually good for us.
Old 08-20-2018, 03:31 PM
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CC units 30- 50K DC powered
​​​​​​​Sportfish units 100K and uo to re fit
Old 08-20-2018, 03:59 PM
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Last I checked the small dc unit was 26k. Cons: they take a while to spool up. They make noise. When I used to visit Catalina, especially when in Hamilton Cove we used a bunch of rocker stoppers. Reduced to roll by 50%.
Old 08-20-2018, 04:30 PM
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Originally Posted by Windwood View Post
Seakeeper has a model for 27 ft boats. My wife loved it. We tested it at the boat show. I wonder what happens when they go wonky and make it unstable?
Do they make the boat unstable when they are inoperable, or simply no longer improve it? If they are mounted above the craft's center of gravity, then I could see it adding to the instability.
Old 08-20-2018, 04:46 PM
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just build on with an old motorcyle wheel and tire full of glycol and spin it at 10,000rpm like the other tht man said.
Old 08-20-2018, 04:53 PM
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Wel they are still pricey so its not a priority for alot of the guys with smaller CC's. They seem ideally suited for applications like yours i.e. a trawler. However, there are not many trawler folks on here it seems. To slow! lol
Old 08-20-2018, 05:42 PM
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I would love to have one on my 32' contender. I just have not researched maintenance or reliability due to the massive initial cost. If it were 20K or less I would look into it.
Old 08-20-2018, 05:45 PM
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We looked into the Sea Keeper for our 43’ Viking and we were around 35-40k installed. I don’t remember which series though.

I don’t know anything about the other manufacturers though.

Old 08-20-2018, 05:55 PM
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Originally Posted by raybark View Post

Do they make the boat unstable when they are inoperable, or simply no longer improve it? If they are mounted above the craft's center of gravity, then I could see it adding to the instability.
Not running wont make it more unstable. I was asking about it malfunctioning and making the boat unstable.
Old 08-20-2018, 08:09 PM
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I used to work for a large yacht manufacturer that used both the Mitsubishi and Seakeeper gyros. I think the Mitsubishi has been on the market slightly longer. I know we were using them as far back as 2009. My experience with gyros is only on larger (50 feet and up) boats.

From the the standpoint of roll reduction, I think the Seakeeper works better than the Mitsubishi. The Mitsubishi needs a few back and forth rocks before the boat plants itself. The Seakeeper does not need this. As long as it is on and enabled, the boat is pretty well planted in the water.

The Mitsubishi is simpler from a maintenance perspective. Just turn it on and off. Only need to service is when something breaks. The Seakeeper is sea water cooled, so you need a sea water pump, strainer, and I think a coolant pump.

The gyros use a fair bit of power when spooling up so a larger generator or second generator was necessary. In addition, they take up storage space. These were not major issues on a large yacht, but could be on a smaller boat where space and power are at a premium. I'm not familiar with the new 12V models for smaller boats, but they are probably fairly compact.

I think there may may be a misconception that they work at any speed, but in reality they are only useful at rest or going slowly. They have no effect above 10 knots more or less.

They are generally mounted very low in the hull (at least on the boats I ran with them) and they had no adverse affects on stability when they were not running.
Old 08-20-2018, 08:17 PM
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Funny thing. I like the motion of the ocean. If I wanted stability I would just take my car for a drive.
Old 08-20-2018, 08:22 PM
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Originally Posted by westbootie View Post
So I notice there are some advertising for different brands of boat gyros.
obviously, there is Seekeeper, Veem, and even Mitsubishi is getting in the game.
lets discuss advantages and disadvantages of the different boat gyro systems.
Mitsubishi has been the game far longer than Seakeeper
Old 08-21-2018, 12:11 AM
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Originally Posted by Hart Breaker View Post
I used to work for a large yacht manufacturer that used both the Mitsubishi and Seakeeper gyros. I think the Mitsubishi has been on the market slightly longer. I know we were using them as far back as 2009. My experience with gyros is only on larger (50 feet and up) boats.

From the the standpoint of roll reduction, I think the Seakeeper works better than the Mitsubishi. The Mitsubishi needs a few back and forth rocks before the boat plants itself. The Seakeeper does not need this. As long as it is on and enabled, the boat is pretty well planted in the water.

The Mitsubishi is simpler from a maintenance perspective. Just turn it on and off. Only need to service is when something breaks. The Seakeeper is sea water cooled, so you need a sea water pump, strainer, and I think a coolant pump.

The gyros use a fair bit of power when spooling up so a larger generator or second generator was necessary. In addition, they take up storage space. These were not major issues on a large yacht, but could be on a smaller boat where space and power are at a premium. I'm not familiar with the new 12V models for smaller boats, but they are probably fairly compact.

I think there may may be a misconception that they work at any speed, but in reality they are only useful at rest or going slowly. They have no effect above 10 knots more or less.

They are generally mounted very low in the hull (at least on the boats I ran with them) and they had no adverse affects on stability when they were not running.
Great informatitve post. Thanks !
Old 08-21-2018, 08:22 AM
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Originally Posted by fireisland1 View Post
Funny thing. I like the motion of the ocean. If I wanted stability I would just take my car for a drive.
I agree, I do too.
it's my young kids and wife that don't tolerate it too well.
if a gyro device allows us to be together as a family out on the water then I'm all for it.

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