59388Re: Water Ballasted Chebacco
- Jan 9, 2009Hi,
Somone in this thread asked if anyone had ballasted a Chebacco. If
you check the earliest Chebacco Newsletters, which are archived at
www.chebacco.com, you'll see there was a boat owned by Sister Krista
with 300# of ballast. When sold the boat the new owner didn't waste
much time before removing the ballast.
I have an unballasted Chebacco and have never felt the need for
ballast. My feeling is that PCB got it right, why screw it up?
S/V Wayward Lass
--- In firstname.lastname@example.org, "mcdennyw" <dwolfe@...> wrote:
> In casting about for a sail boat that two (geezerish) people could
> weekend on and I could tow comfortable behind my RAV4 (like to stay
> below 2000# incl trailer, lighter is better) I first spent a lot of
> Freeship time massaging Garden's "Eel" to make it bigger but
> decided I ought to find a larger, simpler (no boomkin or bowsprit)
> boat. Most designs are ballasted, making them too heavy for me to
> trailer. Irens' Romilly is a beauty but has an 1150# lead shoe
> Bolger's Chebacco fits my parameters pretty well and comes in 19.5'
> and 25' glued lapstrake versions. No ballast so the weight on the
> trailer for the 19'er is about 1100#, about 1350# for the 25. (all
> according to Freeship). There is a nice Chebacco website with lots
> good pics to keep me surfing the net instead of shoveling snow.
> Since I can't leave well enough alone, I'd like to improve two
> 1) Get rid of the flat bottom. It must be a carry over from the
> sheet ply version. Building lapstrake, it wouldn't be much extra
> to carry the strakes down to the keel. This would improve the looks
> IMHO and avoid the chance for ripples to slap against the bottom at
> anchor. 2) Add some ballast to stiffen the boat (geezerish,
> no hiking straps).
> Hey - how about filling the extra volume created by the round
> of flat bottom with water? Now the boat will float on its designed
> waterline, no extra weight on trailer and considerably stiffer.
> out there is room for 500# of water under the sole. Wetted surface
> only goes up 2%
> Using water ballast adds weight and righting moment without making
> the boat more "sinkable" or more difficult to trailer. It does add
> inches to board up draft but I can live with that. Righting moment
> 20 degree heel increases from 1040 to 1440 ft-lbs, at 40 degrees
> 1270 to 2520 ft-lbs. To put these numbers in perspective, at 20
> degrees I create a righting moment of 390 ft-lbs sitting on the
> windward seat; 320 ft-lbs at 40 degrees. So the water ballast is
> having 4 extra people sitting to windward when it's getting hairy.
> Negatives: the exra 500# will reduce the speed by about 10% unless
> sail area is increased and there is some added construction
> What do you think? This seems like such an obviously good idea I
> be missing something. I'd be especially interested in hearing from
> actual Chebacco owners
> This notion is also posted on the WoodenBoat Forum at
> There you can see Freeship renderings of the two hulls and the
> righting moment curves.
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