Chimo
Well-known member
- Joined
- Oct 24, 2016
- Messages
- 753
- Fluid Motion Model
- C-26
- Vessel Name
- Chimo
- MMSI Number
- 316033437
So this last week I hauled out our 25SC for three days with 178 hours on the guage. Though we bought the boat in the fall of 2017 I believe PBH had it in the water for a couple of months before we came along and fell in love with her. Essentially she has been in the water, mostly protected in a boathouse, for two years. here's some observations.
Last year at about the same time the boat came out for an overnight on the hard while a couple of things were fixed and I installed some film pieces to avoid hull abrasion in the boathouse. These have proven to be hugely successful! At the same time I changed all the zincs. I didn't clean the bottom but did clean up the stern area by hand. (In a boathouse the bottom of the boat really doesn't see light so the only real fouling happens at the stern where light comes under the roller door.)
At the end of November I did a half lift, raising the boat for an hour in the slings, and changed the zincs again. I was surprised how fast they had eroded. I wondered about the quality of zincs I was using and so installed a mix of Chinese and Canadian zincs as a test.
In the Spring I looked at the zincs using my GoPro and installed a galvanic isolator. This week I changed all the zincs once again. My belief is that the GI did actually slow the rate of erosion. I also believe that the Canadian zincs were less consumed than the Chinese, particularly the one on the rudder.
The original bottom paint from PBH was a spray job done by professionals using an Interlux product and beautifully smooth. After two years light wet sanding had the primer showing through in odd places so it was time to paint again. I applied 3 coats of Micron CSC waiting the required 16 hours between coats and 16 hours before launch even though it was unusually warm and dry. We'll see how it lasts but obviously I had picked up some slime. As every baby knows, a clean bottom is a happy bottom and my WOT rpm increased from 2970 to 3040. Great for a 3000 rpm engine. I painted the rudder but not the tabs. I'm going to keep an eye on those and I can clean them from the dinghy.
I waxed the sides (no need for polish) and noted the scratches on the hull from the mooring buoys, most likely at Bedwell Bay. I believe that problem has been noted elsewhere. All in all, she's good for another year except perhaps for another half haul in December.
Happy boating!
Last year at about the same time the boat came out for an overnight on the hard while a couple of things were fixed and I installed some film pieces to avoid hull abrasion in the boathouse. These have proven to be hugely successful! At the same time I changed all the zincs. I didn't clean the bottom but did clean up the stern area by hand. (In a boathouse the bottom of the boat really doesn't see light so the only real fouling happens at the stern where light comes under the roller door.)
At the end of November I did a half lift, raising the boat for an hour in the slings, and changed the zincs again. I was surprised how fast they had eroded. I wondered about the quality of zincs I was using and so installed a mix of Chinese and Canadian zincs as a test.
In the Spring I looked at the zincs using my GoPro and installed a galvanic isolator. This week I changed all the zincs once again. My belief is that the GI did actually slow the rate of erosion. I also believe that the Canadian zincs were less consumed than the Chinese, particularly the one on the rudder.
The original bottom paint from PBH was a spray job done by professionals using an Interlux product and beautifully smooth. After two years light wet sanding had the primer showing through in odd places so it was time to paint again. I applied 3 coats of Micron CSC waiting the required 16 hours between coats and 16 hours before launch even though it was unusually warm and dry. We'll see how it lasts but obviously I had picked up some slime. As every baby knows, a clean bottom is a happy bottom and my WOT rpm increased from 2970 to 3040. Great for a 3000 rpm engine. I painted the rudder but not the tabs. I'm going to keep an eye on those and I can clean them from the dinghy.
I waxed the sides (no need for polish) and noted the scratches on the hull from the mooring buoys, most likely at Bedwell Bay. I believe that problem has been noted elsewhere. All in all, she's good for another year except perhaps for another half haul in December.
Happy boating!