Das Boot: The Beautiful Boat
The author's historic wood veneer and epoxy sloop
How Persistence survived "the storm of the century" winds at 123 mph.
See Secrets of Persistence's Storm Survival below.
Anatomy of a pocket cruiser
Special Features that allowed the small sloop to survive Superior's fierce storms and waves.
Length: 20 feet / Beam:7 feet, 4 inches / Draft: Centerboard up, 12 inches, CB down 4 feet 6 inches. Steel centerboard weight: 106 pounds. / Weight: Ultralightweight at about 1100 pounds. / Sail area: Main 80 square feet; Jib 88 square feet / Sail handling controls: In 2007, Persistence received a new tanbark loose-footed jib. It is now controlled by single-line reefing. The jib is set on a Cruising Design roller-bearing furler. All sail controls lead aft to the cockpit. Main has lazy jacks. / Construction details: Keel and stem, white oak; Ribs, mahogany composite, Hull, three layers of 1/8-inch Western Red Cedar veneers, epoxy glued and coated, finished with 4 oz. fiberglass cloth. / Bottom: covered with 6 ox fiberglass cloth, coated with five layers of epoxy and epoxy/carbon (graphite). Finishing: topsides are bright finished with high-quality marine varnish with UV protection. The bottom has Teflon anti-fouling VC-17. /
Electrical: Two photovoltaic panels atop cabin recharge two 12-volt deep cycle marine batteries under forward bunk along keelson.
Engine: 5 hp. Nissan two-cycle outboard mounted on swing bracket. Remote 3 1/2 gallon tank fits under traveler in the cockpit. At cruising speed, the engine consumes about 1/3 gallon per hour. / Radios: VHF radio with masthead antenna, AM/FM radio with internal antenna, and, ham-band radio. / Berths: Large double berth located in the forecastle; two quarter berths are aft extending under sides of cockpit seat. / Miscellaneous Equipment: Magellan GPS, knot meter, depthsounder, three compasses, Portable head under forward V-berth. Foam Flotation fore and aft. The mast is set on a tabernacle and is foamed and sealed. The boat is lightning grounded from mast to keel, and also, all major metal parts. Autohelm with remote control. Three anchors: main Danforth with Chain in first 10 feet, smaller Danforth "lunch-hook," and 10-pound "mud" anchor of mushroom deisgn. / Design additions: Folding cloth dodger fits over the companionway, so the author can sit sheltered inside and operate the boat. A portable seat fits under the companionway. The transom was lengthened with "scoop". Six-inch deep stub keel added through which 3/8-inch thick steel centerboard slides up and down. CB is epoxy/graphite coated and swings on a 7/8-inch thick Silicon Bronze bolt running through case logs in the CB trunk.
"If she ever goes over, she's not coming back up. You'll have to be careful out there," was the advice I got from the boat's designer. But yet Persistence capsized many times, including mast tip in the water, and yet the small craft righted itself and survived to sail on with the author at the helm.
Persistence is not a keelboat -- one of those sailboats whose stability relies on a heavy lead keel far below the waterline that amounts to nearly 40% of the craft's weight. So how did the little sloop withstand the heavy pounding of the Green Storm and other bouts with Superior?
The answer, the author believes, lies in his careful building which selected the heaviest woods, such as layered inch-thick white oak for the keelson, and, the lightest woods, such as Sitka Spruce for the topsides deck beams. Overall, the craft is ultralightweight with its Western Red Cedar hull planking and cabin tops. Thus, I had some weight down below, though it was not a keel.
I also mounted two heavy-duty marine batteries directly atop the keelson, which added another 100 pounds or so. As an added precaution, I managed to change the righting arm by constructing the cabin to be within inches of the outer deck, so that when the boat went over, it would not "flop" into the water, such as it would do if the cabin were further back from the beams. I added inch-thick Sitka Spruce rub rails to each side, tapered at the front and the back to give the sheer a little more grace. These wooden rub rails acted as a sort of "life preserver" around the hull and not only protect the hull from damage from docks and other boats but add floatation in a big way when the boat gets knocked down.
Also, after having an experience with a sailboat that capsized and lay on its side as water gurgled into its mast and finally turtled, with mast full of water and pointing straight down, I decided to foam parts of Persistence's mast. I took off the crane, topped the uppermost section of the mast with spray-in foam, replaced the crane, and then methodically went down the mast and drilled a tiny hole wherever the mast had a piercing for a part, such as the spreaders, and sprayed in more foam, using the small plastic tube that comes with the spray in foam.
The result was that the oversized aluminum mast now had a significant amount of floatation in it, which came into play several times during the dangerous "Green Storm" encounter when the boat did flip over in high winds and the masthead did enter the water (and water sloshed up through the centerboard case, to my horror). What else helped us survive the storm of the century? Before I entered the open waters of the world's largest freshwater lake -- more of an ocean, really -- I always check the craft carefully for closed hatches and vents. I also move all gear out of the bow and the stern as much as possible, and secure with bungee chords these duffle bags, sleeping bags, toiletry cases, cartons of goods, tools, and supplies, alongside the centerboard case, which is in the center of the cabin. This keeps the weight out of the ends, especially the bow, which can dig into waves in heavy going, by making the ends lighter.
When the first blasts of the Green Storm arrived, I knew I had a well-prepared boat and immediately resorted to heavy weather sailing tactics by taking the initial wind blasts on the stern, rather than abeam. Trouble was, I then headed out into Superior far from shore and would have to ride out the storm until the first raw (and very heavy) blasts subsided and I could turn the boat (hopefully) back into the wind and back on course to Thompson Cove, a small island where a tiny harbor of refuge lay.
Part of our survival lay in the fact that I had taken sails down and secured them on the boom and on the jibfurler and was now running under 5 hp. two-stroke outboard engine. The engine took a terrible beating because part of the time its prop was out of the water, with no cooling water being pumped into the engine head---the boat lay on its side, capsized. Later on, when I returned to my home in Shoreview, MN, I took the engine in for servicing and checkup and told my mechanic that I was interested in getting a new four-cycle engine. "If you had a four-cycle out there," he announced, "you probably wouldn't have made it back." I still have my two-cycle outboard, for that was yet another important link in my survival during the Green Storm.