a question - fisher18 stabilizer

i plan on building this boat http://www.hartley-boats.com/fisher18.html , would it be a waste of time if i put a stabilizer like this on the very bottom of the boat? 1 instead of 2 http://img.nauticexpo.com/images_ne/photo-m2/boat-stabilizer-21803-236661.jpg

 

Yes.

What's shown in the picture is only for the purpose of adding roll damping when at anchor. It needs the lever arm of the boom held out to the side of the boat, so it moves vertically through the water as the boat rolls.

If you attached it to the bottom of the boat, it would not have the lever arm and would become useless, as it would be slicing horizontally through the water as the boat rolled.

When underway, the damper would be added drag and wouldn't contribute to the sailing ability of the boat.

 

Hi,

Welcome to the forum,

Just a quick note, your thread title is really not a lot of help - either it will be missed by interested parties or it will be opened by those who have little or no interest.

Perhaps you could add some helpfull 'keywords' to the title fisher18 stabilizer etc.

Good luck with the build and please post progress photo's as you go - will be appreciated by your peers.

 

The hartley 18 is a stable hull. No need to add anything.

 

Welcome to the forum.

Agreed, the 18 is pretty stable, so why do you perceive the need for a stabilizer on this design? This particular type of stabilizer isn't used on the bottom of the boat, but is hung over the side from a boom or derrick.

 

thanks for all the reply's guys. i wasn't talking about that one, i should have been more specific. i mean the stabilizer, i believe its called that, is attached to the bottom of the sail boat.and the reason i wanted to add something is i live around the ocean and just wanted some extra piece of mind if i wanted to use the cabin for a night or two.

 

If you are talking about adding one instead of the two blue appendages attached to the bottom of the boat shown in your first post. The rear one is a rudder for steering. The deeper one in the middle of the hull is a ballasted fin keel. No it would not help a motorboat to have one. stability in a motor boat depends on arranging heavy items inside low down in the boat and keeping the upper parts of the boat light for a lower center gravity. How big of a sea were you thinking you would be encountering?

 

Sleeping on that boat in anything but a very calm cove, will present some motion issues. A steadying sail, flopper stoppers, etc. will help, but it's a really a function of the boat's size, more so than it's stability, at least in regard to sleeping on it, in any kind of sea. As to the stabilizers you mention, maybe you can post an image or two, as it seems terminology is getting in the way.