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05-21-2023, 12:47 PM
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#1
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Veteran Member
Vessel Name: Calypso
Vessel Model: Island Gypsy 36 Europa 1984
Join Date: Jun 2010
Posts: 35
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Island Gypsy fuel tanks project summary
Hi,
I was asked in another thread for pics of the approach I utilized during 2022 to replace the fuel tanks in my 1984 Island Gypsy 36 Europa.
Most seem to choose the "cut em out and put multiple smaller tanks in" approach. I choose to take the tanks out thru the sides of the hull.
The attached pdf is a summary of the project (which I already had handy). This is offered for those who may want to consider this as an alternative approach.
Trawler forum Island Gypsy 36 Europa Tank project summary May 2023.pdf
Any questions re more details, let me know. Fair warning, I have lots of pics to bore you with. 
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05-21-2023, 01:02 PM
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#2
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Guru
City: Seattle
Vessel Name: AZZURRA
Vessel Model: Ocean Alexander 54
Join Date: Aug 2017
Posts: 4,009
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Nice recap of a big project.
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05-21-2023, 02:40 PM
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#3
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Moderator Emeritus
City: Au Gres, MI
Vessel Name: Black Dog
Vessel Model: Formula 41PC
Join Date: Jul 2015
Posts: 20,243
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Nicely done! I had thought about doing our last boat that way but the yards near me didn’t have the experience to do that.
One tip for locating things through the hull instead of drilling holes is to get 2 large rare eartn magnets and tape one inside the hull where you need the hole and then go outside and hold the other magnet close. It will stick to the hull and you don’t need to measure or drill test holes.
__________________
Boat Nut:
If you are one there is no explanation necessary.
If you aren’t one, there is no explanation possible.
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05-21-2023, 06:10 PM
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#4
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Senior Member
City: Fayetteville, NC
Vessel Name: Dirty Deeds
Vessel Model: Maritimo 48
Join Date: Jun 2015
Posts: 299
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Excellent recap and thanks for posting.
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05-21-2023, 06:16 PM
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#5
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Guru
City: Narragansett Bay
Vessel Model: Grand Banks 36
Join Date: Sep 2016
Posts: 1,782
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Quote:
Originally Posted by MVCalypso
Hi,
I was asked in another thread for pics of the approach I utilized during 2022 to replace the fuel tanks in my 1984 Island Gypsy 36 Europa.
Most seem to choose the "cut em out and put multiple smaller tanks in" approach. I choose to take the tanks out thru the sides of the hull.
The attached pdf is a summary of the project (which I already had handy). This is offered for those who may want to consider this as an alternative approach.
Attachment 139035
Any questions re more details, let me know. Fair warning, I have lots of pics to bore you with. |
Nice recap! Thanks for taking the time to put that together.
__________________
Carl
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05-21-2023, 07:19 PM
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#6
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Veteran Member
Vessel Name: Calypso
Vessel Model: Island Gypsy 36 Europa 1984
Join Date: Jun 2010
Posts: 35
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Quote:
Originally Posted by Comodave
Nicely done! I had thought about doing our last boat that way but the yards near me didn’t have the experience to do that.
One tip for locating things through the hull instead of drilling holes is to get 2 large rare eartn magnets and tape one inside the hull where you need the hole and then go outside and hold the other magnet close. It will stick to the hull and you don’t need to measure or drill test holes.
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The magnets are a great idea which didn't occurr to me. I'll try to remember that.
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05-21-2023, 07:55 PM
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#7
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Moderator Emeritus
City: Au Gres, MI
Vessel Name: Black Dog
Vessel Model: Formula 41PC
Join Date: Jul 2015
Posts: 20,243
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I use them anytime I am drilling on the boat since it is more accurate than measuring and much faster.
__________________
Boat Nut:
If you are one there is no explanation necessary.
If you aren’t one, there is no explanation possible.
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05-22-2023, 10:06 AM
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#8
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Guru
City: Coupeville Wa.
Vessel Name: Pelorus
Vessel Model: Californian 42 LRC
Join Date: Oct 2015
Posts: 2,191
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MVCalypso, thank you for posting this. I've often seen steel hulls opened up for engine swaps etc and wondered why that approach is not used with FRP hulls.
Comodave, thank you for the magnet tip. That is sure to come in handy some day.
__________________
Some things are worth doing simply because they are worth doing.
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05-22-2023, 12:11 PM
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#9
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TF Site Team
City: PNW, headed down to Mexico
Vessel Name: Muirgen
Vessel Model: 50' Beebe Passagemaker
Join Date: May 2019
Posts: 2,991
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Quote:
Originally Posted by Comodave
I use them anytime I am drilling on the boat since it is more accurate than measuring and much faster.
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Dave, how thick a hull have you successfully used this technique on? I will be installing two new depth sounder transducers next month, and this looks like it may help, but our hull is 2" thick.
__________________
Vessel Name: Muirgen
Vessel Model: 50' Beebe Passagemaker
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05-22-2023, 01:18 PM
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#10
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Moderator Emeritus
City: Au Gres, MI
Vessel Name: Black Dog
Vessel Model: Formula 41PC
Join Date: Jul 2015
Posts: 20,243
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Quote:
Originally Posted by Portage_Bay
MVCalypso, thank you for posting this. I've often seen steel hulls opened up for engine swaps etc and wondered why that approach is not used with FRP hulls.
Comodave, thank you for the magnet tip. That is sure to come in handy some day.
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It depends on how strong a magnet you have. I have some that 2 stuck together and I am unable to get them apart so I use those. They will easily go through 2”.
__________________
Boat Nut:
If you are one there is no explanation necessary.
If you aren’t one, there is no explanation possible.
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05-22-2023, 01:57 PM
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#11
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Veteran Member
City: Semiahmoo
Vessel Name: Endeavor
Vessel Model: Grand Banks 32
Join Date: Nov 2021
Posts: 57
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MV Calypso,
Thanks for a most informative post! Are the new tanks steel or aluminum? And would it be ungentlemanly to inquire what the ballpark price was? Very cool that you got a topsides repaint for "free." Thanks again.
Regards,
Scott
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05-22-2023, 02:11 PM
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#12
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Veteran Member
Vessel Name: Calypso
Vessel Model: Island Gypsy 36 Europa 1984
Join Date: Jun 2010
Posts: 35
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Quote:
Originally Posted by Endeavor GB 32
MV Calypso,
Thanks for a most informative post! Are the new tanks steel or aluminum? And would it be ungentlemanly to inquire what the ballpark price was? Very cool that you got a topsides repaint for "free." Thanks again.
Regards,
Scott
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The new tanks are Al, 5051 I think (I'd have to check the spec to be 100% sure of the alloy). After pressure testing, they were epoxy coated (I don't remember the exact coating used). Tanks are set on wood mounts, separated from the wood by a closed cell foam layer which prevent any water from being trapped between the tank and the mounts.
The pricing is hard to nail down for only the tank project, as the quotes all included bottom jobs etc in the package. The tank only stuff was just a tad under $40k. please don't ask me about the total yard bill which had other work included - that still makes me cringe. 
Backing out the btm jobs $ etc, I had two fixed $ bids for $36k-$38k. The "no upper bound" estimates for the tank work ran $30k to $75k. Some yards were honest and said "no bid" as tank replacement was not their cup of tea.
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05-23-2023, 12:21 PM
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#13
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Guru
City: NEW PORT RICHEY
Vessel Name: M/V Intrigue
Vessel Model: 1985 Tung Hwa Senator
Join Date: Dec 2019
Posts: 738
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Very nice. I much appreciate the documentation.
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05-24-2023, 09:37 AM
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#14
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Senior Member
City: San Diego
Vessel Name: North Star
Vessel Model: Lindell 36
Join Date: Jun 2020
Posts: 454
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Great writeup, thanks for posting. This really seems like a reasonable way to go unless you needed to pull the engines for other reasons. Being open like that I would think things can be done to a better standard than if it were done internally. The only tricky thing with this with your boat is getting the lapstrake lines correct in the areas of the patch. Did you see how they did that? Router on a guide? I assume they used epoxy on the patch as well?
__________________
North Star
Lindell 36, Twin 370hp Cummins
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05-24-2023, 11:16 AM
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#15
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Veteran Member
Vessel Name: Calypso
Vessel Model: Island Gypsy 36 Europa 1984
Join Date: Jun 2010
Posts: 35
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Re the lapstrake lines: The panels were carefully realigned in place before the external re-lamination was done.
Here's a pic of a panel in place during the re-lamination work:
Note that the lines are filled in over the scarf joint area.
Here's a pic with the groves cut in:
I was not there for that step so I don't know exactly how it was done.
Here's a pic of the area after painting:
When sighting down the hull in bright sun, I can't see where it was cut open.
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05-26-2023, 07:21 AM
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#16
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Senior Member
City: Phoenix, AZ
Vessel Name: Enigma
Vessel Model: 1997 Wellcraft Excel 26 SE
Join Date: Mar 2015
Posts: 499
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Thanks so much for sharing!
__________________
>>>>>>>>>>>Action
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05-26-2023, 01:05 PM
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#17
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Newbie
City: Waterville
Vessel Name: Casita
Vessel Model: Island Gypsy 32
Join Date: Aug 2019
Posts: 3
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Wow! Amazing job. A slightly unrelated questions. What color Awlcraft did you go with? We'll be painting our IG 32 this fall and starting to think about color.
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05-26-2023, 03:05 PM
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#18
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Veteran Member
City: Little River, SC
Vessel Name: Memory Lane (fiberglass)
Vessel Model: 1974 Pacemaker 40 Flush deck Motor Yacht
Join Date: Jan 2016
Posts: 89
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nice job
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05-26-2023, 03:06 PM
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#19
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Veteran Member
City: Beltsville
Vessel Name: Brown Eyed Girl
Vessel Model: 38ft Helmsman Trawler
Join Date: Apr 2020
Posts: 27
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Absolutely amazing what can be done with the right crew.
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05-26-2023, 03:38 PM
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#20
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Veteran Member
Vessel Name: Calypso
Vessel Model: Island Gypsy 36 Europa 1984
Join Date: Jun 2010
Posts: 35
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Quote:
Originally Posted by Bro27
Wow! Amazing job. A slightly unrelated questions. What color Awlcraft did you go with? We'll be painting our IG 32 this fall and starting to think about color.
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Color is Snow White, avail in either awlcraft or awlgrip. I had previously repainted some fly bridge sections with awlgrip, I switched to awlcraft for the topsides as it's much easier to touch up as the color is all thru the paint whereas awlgrip floats a clear coat to the top as it dries.
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