Total work time to date: 714 hours
Diary on the construction of a Seaclipper 20, a plywood trimaran designed by Jim Brown and John Marples. Our boat's Sail No. is 50. The boat has been named GEODETICA and was launched on september 28th, 2024.
Monday, June 29, 2020
Painting ama decks (2)
First coat of paint (Boero HP: water based polyurethanic enamel, semi-matt, light grey), to the deck of the first ama. This is the same paint that we used for the akas.
Sunday, June 28, 2020
Painting ama decks (1)
Two hours of work to start painting ama decks. We cleaned the deck of the starboard ama and put masking tape all around the deck.
We then hung a pastic skirt to the masking tape to protect the painted hull.
At last, we gave one coat of Boero "Giano" primer, diluted 10%. The ama deck required 330 grams of diluted primer. We used, as always, a short hair roller.
We then hung a pastic skirt to the masking tape to protect the painted hull.
At last, we gave one coat of Boero "Giano" primer, diluted 10%. The ama deck required 330 grams of diluted primer. We used, as always, a short hair roller.
Total work time to date: 713 hours.
Saturday, June 27, 2020
Painting again
Two hours of work today. We turned the first ama rightside up to sand away all the paint drips on the deck. It's ready now for one coat of primer and two coats of grey enamel, the same that we used for the akas.
We then gave the third coat of white enamel to one side of the daggerboard (the other side had been completed many month ago), and to the false transom which is going to stay in the water a lot.
Total work time to date: 711 hours
We then gave the third coat of white enamel to one side of the daggerboard (the other side had been completed many month ago), and to the false transom which is going to stay in the water a lot.
Total work time to date: 711 hours
Saturday, June 20, 2020
Aka system completed
Just one hour today, to assemble the aka system. Here it is in all its glory
We also checked the forestay attachment
Total work time to date: 709 hours
We also checked the forestay attachment
Total work time to date: 709 hours
Monday, June 15, 2020
Attaching the crush plates
Three hours of work today: we attached all the 16 crush plates to the akas.
Those are square pieces of 75 mm sided, 6 mm thick aluminum, whose task is that of spreading the load of the bolts connecting the various beams of the akas to the hulls. 4 of the crush plates are on the outboard side of the swing arms to support the amas and are for 12 mm bolts; the remaining 12 are for 10 mm bolts. Each crush plate is attached to the beams using two 5 mm SS self tapping screws on a diagonal of the square.
We pre-bored for all self-tapping screws using a 2.5 mm bit and we filled each hole with clear epoxy. Then we cleaned the bottom of each crush plate with alcohol, and spread a thin layer of sealant on each. Finally, putting the right bolts trough the holes in the beams and the crush plate to maintain alignment, we fastened each self tapping screw and cleaned everything.
In this picture the whole aka system is shown.The two heavy beams at the far right will be installed permanently of the main hull (vaka); the four swing arms will pivot on the ouboard bolts of these central beams. The total weight of the assembly is very significant (we estimated about 80 kg in total), with the advantage of a very simple construction.
Total work time to date: 708 hours
Those are square pieces of 75 mm sided, 6 mm thick aluminum, whose task is that of spreading the load of the bolts connecting the various beams of the akas to the hulls. 4 of the crush plates are on the outboard side of the swing arms to support the amas and are for 12 mm bolts; the remaining 12 are for 10 mm bolts. Each crush plate is attached to the beams using two 5 mm SS self tapping screws on a diagonal of the square.
We pre-bored for all self-tapping screws using a 2.5 mm bit and we filled each hole with clear epoxy. Then we cleaned the bottom of each crush plate with alcohol, and spread a thin layer of sealant on each. Finally, putting the right bolts trough the holes in the beams and the crush plate to maintain alignment, we fastened each self tapping screw and cleaned everything.
In this picture the whole aka system is shown.The two heavy beams at the far right will be installed permanently of the main hull (vaka); the four swing arms will pivot on the ouboard bolts of these central beams. The total weight of the assembly is very significant (we estimated about 80 kg in total), with the advantage of a very simple construction.
Total work time to date: 708 hours
Saturday, June 13, 2020
Slow and steady wins the race
After an incredible year, including a COVID19 lockdown which has been particularly strict in Italy, here we are again. As an icebreaker, we tidied up the shop and started to work on the akas:we have to install all the 16 aluminum crush plates. That's why we opened the milestone beer...
Total work time to date: 705 hours
Total work time to date: 705 hours
Friday, December 27, 2019
Happy Holidays
Hyia all! We have not given up even if thing have slowed down a lot due to a lot of reasons. Looking forward to restarting as soon as we can, we have purchased the eye bolts specified for the boat, which are impossible to find in Italy. I had to order them from a British company which only ships to UK and Ireland, so I had them shipped to my son who lives in Scotland and then he carried those home when visiting for the christmas holidays.
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