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Carlson Design

Hull Designer

Download our free Hull Designer , a simple, interactive, visual 3-d hull design Windows program for modeling and developing panels for hard chine construction. Find Center of Boyancy, Center of Lateral Area, Length Waterline, and righting moment (pitched or heeled) among other calculations. Create patterns for stem, stern, bulkheads, up to 10 chines, and up to 8 frames for construction.

Alligator – My Biloxi Lugger

Alligator has proven herself to be a fast, safe, tough, and capable cruiser, covering twenty eight thousand miles in perfect comfort during the past 4 years. Walter’s goal was to build a vessel that would be superior to the average cruising powerboat in every way. There is simply no comparison between this Biloxi Lugger and the typical “built to a price” production trawler. She was designed and constructed in Pensacola, FL, by Walters Boat building company, a business officially accepted by the U.S. Coast guard as a recreational boat manufacturer.

Bolger Micro

The Micro is a big little boat – a big cockpit and lots of interior volume in only 14 feet. Almost no draft – pull up on the beach and step of into ankle-deep water. Self-tends itself to windward over about 6 or 7 knots of breeze. Believe it or not, our racing version with retractable bowsprit has done over 10 knots with 4 nervous adults aboard – creeeaak, groooaann! Sadly, we’re thinking of offering her to a good home one of these days to make room. 1995 on Grand Lake O’ the Cherokees near Tulsa.

Whitehall Wherry — In 1998 I took lines from a 16 footer drawn by Platt Monfort for this build

I took some lines in 1998 for this little frameless Whitehall Wherry from a 16 footer drawn by Platt Monfort. I entered it into the Hulls program, creating a multi-chine version and shrinking to 12 feet. Built over temporary frames of 1/4″ luan and epoxy/glass both inside and out. Mahogany gunwhales and thwart seats stiffen it right up. Light enough at about 65 lbs, rows fast and tracks well with the small skeg.

Bolger Sneakeasy — A step-by-step 1997 construction pictorial of my box-keel Bolger Sneakeasy

I ordered my Sneakeasy plans for the older ‘square’ design from Dynamite Payson. Philip C. Bolger’s “Boats with an Open Mind” (McGraw-Hill International Marine 1994) describes both that version and the box keel version I built. Apparently, there are no expanded panels available for the latter (I assume those plans would be available from Bolger). So, I entered the box keel hull into my free Hulls program and plotted out the expansions on Tyvek on my 6′ by 32′ plotter. I didn’t end up using all my plots; for the sides it was just as easy to clamp plywood to the boat and transfer by hand.

Bolger Light Schooner – A step-by-step construction pictorial of my 1999 Phil Bolger Light Scooner

Plans for the Bolger Light Scooner are described and reproduced at reduced scale in Dynamite Payson’s book “Build the New Instant Boats” (McGraw-Hill International Marine 1984). There are a few dimensions to be scaled, which appear to about 1 mm = 1.55 inch. If you’re not a draftsman, you might want originals, available from Payson (and I assume Phil Bolger) at true scale.

Rozinante – A pictorial of the refit of our Herreschoff Rozinante canoe yawl, now owned by a friend.

Rozinante, the horse, was Don Quixote’s mule, whom he imagined a steed. Rozinante, the canoe yawl, was Francis Herreschoff’s idealized vision of the perfect, spartant, and beautiful cruiser, as described in his book, “The Compleat Cruiser” in the 1956. Like Quixote, the sailorman notes that his life and adventures aboard are about 7/8′s imagination.