Kaimusailing

s/v Kaimu Wharram Catamaran

Vessel Name: Kaimu
Vessel Make/Model: Wharram Custom
Hailing Port: Norwalk, CT
Crew: Andy and the Kaimu Crew
About: Sailors in the Baltimore, Annapolis, DC area.
23 April 2017 | St. Marys, GA
20 April 2017 | St. Marys, GA
19 April 2017 | St. Marys, GA
18 April 2017 | St. Marys, GA
16 April 2017 | St. Marys, GA
14 April 2017 | St. Marys, GA
13 April 2017 | St. Marys, GA
11 April 2017 | St. Marys, GA
11 April 2017 | St. Marys, GA
10 April 2017 | St. Marys, GA
07 April 2017 | St. Marys, GA
06 April 2017 | St. Marys, GA
05 April 2017 | St. Marys, GA
05 April 2017 | St.
30 March 2017 | St. Marys, GA
30 March 2017 | St. Marys, GA
24 March 2017 | St. Marys, GA
23 March 2017 | St. Marys, GA
20 March 2017 | St. Marys, GA
15 March 2017 | St. Marys, GA
Recent Blog Posts
23 April 2017 | St. Marys, GA

Attacking the Topsides

It was possible to make a time lapse video with a couple of problems. To get the mast and crane in the pictures, I shot in portrait mode. Plus I was using Canon’s “L” size for the photos. The video application is looking for landscape mode and a smaller sized frame. So, the video comes out [...]

20 April 2017 | St. Marys, GA

Time and Tide Wait for No Man

Here is a link to the album shot yesterday of Time and Tide’s launching by crane at SMBS:

19 April 2017 | St. Marys, GA

furball Catamaran Dinghy

Richard and Gill launched their little catamaran dinghy that Richard built from plans. They named it “furball”, as that which is spat out by the larger cat-amaran. Here is a link to more photos of it:

18 April 2017 | St. Marys, GA

Nina and Pinta at St. Marys

When I received the various parts, hulls, etc. that became Kaimu, it was on Good Friday the 13th back in ‘01. Easter Sunday ‘02 found me in New Smyrna Beach, Florida, up the mast and repairing the main halyard. A biplane came in over the treetops on shore and buzzed me while I was up there. It [...]

16 April 2017 | St. Marys, GA

Time and Tide Under Crane

Here is another attempt at a vertical panorama. It’s Richard and Gill’s catamaran getting craned up a bit so that the blocking underneath can be lowered. Then the crane will lower the catamaran and soon a transporter that lifts the catamaran by its underdeck will pick it back up again and bring [...]

14 April 2017 | St. Marys, GA

Canoe Hanging

It was time to start work on the topsides and see if I could tint the arctic white to a light blue. An approximate calculation of the surface area of the hull side is about 165 sq ft to one side. Times 4 it is 660 sq ft to be painted. This does not include the bottom paint below the waterline. With [...]

Attacking the Topsides

23 April 2017 | St. Marys, GA
Capn Andy/Warm Spring
It was possible to make a time lapse video with a couple of problems. To get the mast and crane in the pictures, I shot in portrait mode. Plus I was using Canon’s “L” size for the photos. The video application is looking for landscape mode and a smaller sized frame. So, the video comes out lying on its side and oversized for the computer screen. In order to make a proper video I would have to resize all the photos and rotate them. Probably have to rotate and crop, then resize.
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There was actual work going on through all this launching and playing around in Richard’s dinghy. He let me ferry crew back to the dock after the catamaran was anchored in the North River (Marsh). The dinghy is so cute, but it is small with not too much freeboard. It looks like it will be OK for two and in harbor use, no choppy bay crossings. It is very maneuverable and moves easily through the water. He hints that he might make an improved model. As it sits now in the water, he will have a lot of sailors asking him what company makes it.
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Also, one of the spectators at his big catamaran launching said they thought Fountaine-Pajot had stopped making the Antigua model. They had, long ago. This boat is over 20 years old, but the spectator thought it was brand new. It is a showpiece.
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I was starting work on Kaimu’s topsides and experimented with using a paint pad to apply the arctic white acrylic urethane. It works, but is slow. Next I will use phenolic 1/4“ nap rollers. The quality of the finish might suffer a bit. It will allow larger batches of paint and faster work.
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Instead of working with 20-30 sq ft patches of hull, I can mix a quart batch of paint at a time and roll it on before it goes off. I should be able to coat about 2/3 of a hull side at once. Thus, I began expanding the preparation to an entire hull side at a time. This works out even as the weather heats up, because there is always at least one hull side available in the shade. My plan was to get the deck and cabin top work over with before the really hot weather arrived. The forecast is now for up in the 90‘s the next few days.
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We had a celebration at the gas station restaurant and had a larger crowd from the boatyard than usual. As we sat around the table I noticed there was only one captain there who had a monohull, and he was looking for a catamaran. I pointed to myself and said, “catamaran”, then went around the table, “catamaran”, “catamaran”, “catamaran”, “catamaran”, “catamaran”, “catamaran”, and finally, to the odd man out, “monohull”. He responded with the nautical equivalent of “Oh shucks”.
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I found the best tool for attacking the surface of the Wharram hull is the belt sander. I was using 40 grit belts from Lowes. The bite of these belts is aggressive and the belt sander gets pulled along. Aiming it up the hull and leaning on it just a bit causes it to go along like a self riding lawnmower. Otherwise it would be a very bulky tool to use.
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After doing the topsides from the waterline up to the sheerline, I used the angle grinder with a 36 grit flap disk to feather out any remaining divots in the old paint. If there was any question about the old paint’s condition, crazing, cracks, flakes, it was sanded off. The result was a dull flat surface with little smooth craters where a pit or crack was sanded out.
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The port outboard hullside was the one in worst condition. There was a 20 sq ft patch of missing sheathing and a bad section of sheer stringer/rub rail. The sheathing problem was mostly below the waterline, so a narrow repair was made on the part that would be painted along with the topsides. The edges of the fiberglass repair were feathered out into the hull’s surface.
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The spots that would need filler were first primed with unthickened epoxy. Then a mix of colloidal silica/phenolic microballoons (50/50) was troweled on with a homemade plastic disc that looked like a half moon. I cut it out of old kitty litter pails and made the curved part match the curvature of my mixing bowls. This way the curved part could scoop out all the available fairing mixture and the straight part could smooth it perfectly flat. This hull side, port outboard, was the one with the most repair work, yet I was done with the fairing mix by 3 in the afternoon.
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In one of the photos taken during Time and Tides launch, Rocky, the boatyard owner and manager, is checking the progress with Kaimu in the background. Kaimu’s hull is dirty with old paint and mildew. The next day I tried a cleaner called “LA’s Awesome” because one of the yardbirds said it removed mildew like magic. I wet down the hull, then sprayed the cleaner all over, then quickly scrubbed with a soft brush on a stick. The mildew came off like magic. I then did all the rest of the boat prior to sanding and fairing. I will post an “after” picture next time.

Time and Tide Wait for No Man

20 April 2017 | St. Marys, GA
Capn Andy/Warm Spring
Here is a link to the album shot yesterday of Time and Tide’s launching by crane at SMBS:
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https://www.flickr.com/photos/8728395@N03/albums/72157680789795331
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I’m going to try to make a time lapse video, but if you go to the end of the album and select that picture (it’s actually near the beginning of the shoot), you can backspace through the album just like a time lapse.

furball Catamaran Dinghy

19 April 2017 | St. Marys, GA
Capn Andy/Warm Spring
Richard and Gill launched their little catamaran dinghy that Richard built from plans. They named it “furball”, as that which is spat out by the larger cat-amaran. Here is a link to more photos of it:
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https://www.flickr.com/photos/8728395@N03/albums/72157682708269006
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Next will be some photos of them launching the big cat, “time and tide”.

Nina and Pinta at St. Marys

18 April 2017 | St. Marys, GA
Capn Andy/Warm Spring
When I received the various parts, hulls, etc. that became Kaimu, it was on Good Friday the 13th back in ‘01. Easter Sunday ‘02 found me in New Smyrna Beach, Florida, up the mast and repairing the main halyard. A biplane came in over the treetops on shore and buzzed me while I was up there. It was early in the morning. I was wondering what that pilot was doing out early on Easter morning. He was probably wondering what I was doing up on that mast.
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This Easter I was getting over the flu and next door they were getting their catamaran lowered from its raised position, which enabled them to repair the rudders and bottoms of the keels. Now in the lowered position they were ready to launch, and eager. In my last post I provided a link to photos of the crane lift, but somehow they were sorted out backwards, so it makes more sense to look at the photo album from the end. It starts with the crane approaching, and so forth.
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I needed to put a coat of arctic white on the epoxied wooden portlight bezel, but that wouldn’t take much paint of all. A small batch of paint is about 5-6 ounces, which is about a fifth of a quart. A quart is said to cover 100 sq ft, so a small batch should cover about 20 sq ft. I added the two forward compartment hatches to the paint job. They are about 4 sq ft each side, top and bottom, so the pair of hatches would need 16 sq ft of paint. It looked like a perfect match. I mixed up a batch and began painting, first the inside of the first hatch, then the topside, then the inside of the second hatch, and what?, I was running out of paint after only 12 sq ft of painting. This also has implications on the amount of paint needed to paint the hull sides. 660 sq ft.
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The replica ships of Columbus came to St. Marys at Lang’s Marina and we toured them and took a bunch of pictures which are uploaded to Flickr at:
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https://www.flickr.com/photos/8728395@N03/albums/72157680953779440
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If you put your cursor over a picture it will reveal a descriptive file name, such as, “Pinta view forward”. I tried to get photos of every rigging detail. The Nina replica has been called the most authentic recreation of a Spanish caravelle.

Time and Tide Under Crane

16 April 2017 | St. Marys, GA
Capn Andy/Warm Spring
Here is another attempt at a vertical panorama. It’s Richard and Gill’s catamaran getting craned up a bit so that the blocking underneath can be lowered. Then the crane will lower the catamaran and soon a transporter that lifts the catamaran by its underdeck will pick it back up again and bring it over near the water where the crane will lift it again and launch it.
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The rest of the pictures taken of this operation are here:
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https://www.flickr.com/photos/8728395@N03/albums/72157682584380426
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There was a question of the use of spreaders in the crane’s hoist. Spreaders are long rods that hold the hoisting straps apart so the straps don’t crush the hull. In this hoist, and all others done at the boatyard, spreaders aren’t used. From the photos you can see that the extreme height of the crane puts the hoisting straps far enough apart that they have almost no compression of the hull.

Canoe Hanging

14 April 2017 | St. Marys, GA
Capn Andy/Warm Spring
It was time to start work on the topsides and see if I could tint the arctic white to a light blue. An approximate calculation of the surface area of the hull side is about 165 sq ft to one side. Times 4 it is 660 sq ft to be painted. This does not include the bottom paint below the waterline. With 1 quart covering 100 sq ft, it comes out to 6.6 quarts, 13.2 for coverage of 2 coats. So that’s 3 gallons of paint and a bit. I mix paint in small batches that cover about 20 sq ft. I don’t have to calculate how much paint I need for an area, just keep mixing the two part paint in little batches and apply it till there is less than 20 sq ft left to be painted. No wasted paint, no disasters with a large batch of paint being too much or going off too soon, leaving a container of solidifying paint.
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I needed to paint the dinette portlight bezel and some spots on the pilothouse, but it was less than 20 sq ft, so I had to come up with more arctic white paint projects. The two hatches on the forward storage compartments were very rough looking. I was going to make new ones later, after the boat was relaunched, so I had left them as they were. They would be good candidates for repainting. Plus, they were each about 4 sq ft. That’s 16 square feet painting top and bottom of both hatches. Perfect.
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I ran over them with the belt sander, angle grinder with flap disk, and palm sander with 3M gold 150 grit stick-on paper. They needed some epoxy repair to glue the sheathing where it had come loose around the edges, and some filling where the wood had gone soft.
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There was another epoxy job to do. The crossbeams for the outrigger canoe were showing voids in the laminations. Although the laminations were glued strongly, gaps had to be filled.
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Setting up the canoe on its sawhorses resulted in it tumbling off, it was too unstable and too high to comfortably work on. I got an idea to suspend the canoe on tie down straps that hang from the top bar of the sawhorses. The ends of the canoe would fit inside the sawhorses, it was just a matter of attaching one end of the strap to one end of the sawhorse bar, then run the canoe into the sawhorse part way, then pull the strap under the canoe, up to the other end of the bar, and adjust it so the canoe was up off the ground. Then the ends of the straps were permanently screwed to the sawhorse bar. After both ends of the canoe were suspended, the outrigger was similarly suspended, this time the sawhorse was right in the middle of the outrigger float (ama) and adjusted to hold it just at the right height. The photo is of this arrangement.
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The hiking seat was put on the outrigger crossarms and moved around while I sat on it in different positions. I didn’t come up with one that felt comfortable, so that part will have to be sussed out maybe after the canoe is in the water. It will be OK for paddling around, the hiking seat is only for when a sailing rig is installed. To my surprise, the hiking seat just happened to fit the aluminum scaffold I had been using. I had had a piece of plywood on it with pieces of 2X4 to try to keep it from wobbling. It didn’t work and I injured my knee as a result a few weeks back. Now I can use the hiking seat on the scaffold while I work on the topsides.
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