Painting a larger boat's hull

erikgreen

Captain
Joined
Jan 8, 2007
Messages
3,105
Greetings, all;

I've been reading through the posts on this board to give myself an education in boat restoration... I must say there's some great information here.

I recently purchased my first boat (after SCUBA diving for a couple years, and being around boats, I was bitten by the bug) and I have a question about working on it.

First, here's some pictures: http://www.greendragon.org/boat/

My first question (I'm sure I'll have more) is how can I paint the hull, or work on all of it, on the trailer? Obviously I can't lift the boat off without a lift (it's about 5000 lbs) and it's a roller trailer so I can't easily jack it up on boat stands and roll the trailer out. I can paint it on the trailer with some work, but I'll obviously miss spots where the rollers sit.

The reason I need to get to the whole hull is to refinish it or at least repaint. The previous owner(s) had painted over the original gel coat with red paint of some type that blistered below the waterline. There's dock rub on the starboard aft corner, and some dings and scratches elsewhere. Additionally, the trailer needs a lot of repair, which I'd like to do some of before I float the boat in the spring.

I'm probably going to ask a lot of questions here going forward, but for now here's the specs on the boat and my plans:

It's a 22 foot 1973 Sea Ray SRV220 with a Mercruiser 888 and a pre-alpha outdrive. The 888 is a 302 ford, looks stock, with a 2 barrel carb and the old points-style ignition. It's on a rather beat up trailer that I had to rig temporary lights on to haul the boat home.

Stuff I'm going to work on, more or less in order:

1) Engine and drive test - it's supposed to run, but I want to know how well
2) Fix trailer - install brakes, fix rollers, new hitch, rewire
3) Fix rot - there's one soft spot in the deck at the motor, and I expect a good chunk of the deck to need to come out. At some point someone replaced the fuel tank, so it may or may not be in good shape below.
4) Redo interior. The 70s interior is a bit dated, and the carpet is torn. Also, I want a few less comforts and a bit more useable space, so the seats and settee/table are coming out, and going in are a bench seat and tank rack. I also may redo part of the console. The existing fridge and icebox are coming out, as are the water tank and broken sink. For the length of trips I do, a cooler will do fine.
5) Electrical rewire... several owners have done their own wiring to "fix" things and it shows. There's solid wire in places, splices, electrical tape, and general nastiness. Best to start over.
6) Bow hatch... looks like it was rebuilt out of plywood and seals with foam tape against aluminum angle... not the best if I take water over the bow (the boat's for Lake Superior).

There's even a sink drain that is connected to a hull fitting with a section of garden hose.

The good:
The engine/sterndrive is supposed to work
The trim tabs and hydraulics work
The steering gear works
The hull is apparently solid... as in, no wood core. As far as I can tell the outer hull is completely fiberglass.
The fabric top's in decent shape

It's mine :)

The price: $1350 with the trailer.

Erik
 

Zetman

Petty Officer 2nd Class
Joined
Jan 24, 2005
Messages
165
Re: Painting a larger boat's hull

I wonder if you could sand blast the red paint off..the boat I'm working on has been re-painted along the top and sides and I'm blasting it off right now, it seems to be working very well for me..just a thought..nice boat btw..Zet
 

erikgreen

Captain
Joined
Jan 8, 2007
Messages
3,105
Re: Painting a larger boat's hull

Well, I'm sure I can sandblast it with the right media. I think I'd probably use some sort of soft grit or beads to avoid totally destroying the gel coat and tunnelling into the glass.

That doesn't solve my main problem, though... can anyone think of a way to get a boat this size off the trailer so I can paint the whole bottom? Or do I need to hire a crane?

Erik
 

wil7483

Petty Officer 1st Class
Joined
Jan 19, 2007
Messages
377
Re: Painting a larger boat's hull

I am in the same boat as you (pun intended). My project boat is bottom painted and it is flaking and peeling and will need to be redone soon. Although my boat is a 23' Wellcraft it weighs a lot less than yours. It also is on rollers however. I definitely need to get it on stands so that I can repaint the bottom and blast the trailer and have it repainted and rewired as well. I'll be watching this thread for similar suggestions.
 

erikgreen

Captain
Joined
Jan 8, 2007
Messages
3,105
Re: Painting a larger boat's hull

Well, my fevered brain is working on this a bit. Last night I considered building a cradle to lift the boat clear of the trailer, using multiple hydraulic hand jacks to do the lift. Obviously a car lift with sufficient capacity would do the job too, provided it was adapted to fit a boat hull.

A sling lift would be ideal, but is expensive. Floating the boat off the trailer would get me to the trailer, but doesn't help with painting the hull.

What I may end up doing is fixing the dings and touching up the paint I can reach, but waiting until summer to paint the hull, when I can have a marina pull the boat for me and put it on blocks long enough to paint it all over. Expensive again, but that may be the only way. A boat this heavy just isn't easy to work with.

I'm probably going to put the boat and trailer on jack stands long enough to do the trailer brakes, and I can still do the trailer wiring and hitch replacement regardless. The rollers will have to wait until I float the boat off the trailer.

Fun stuff. Good thing I can work on the interior before spring.

Erik
 

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
28,435
Re: Painting a larger boat's hull

Eric, You can put that boat on blocks. It will be a PITA, because you will need to reblock the bow, for every trailer cross member, but it can be done with about 15 cement blocks, a couple of small bottle jacks, and a couple of 2x6 and 4X4 scraps. It is important to make sure the boat doesn't fall on you.

To start, lower the trailer tongue to the ground. Now install the cement blocks under the transom corners and use the wood to adust the block towers to closely match the hull. Now lift the trailer tongue until most of the weight of the boat is on the blocks. Now jack up the bow in its keel area, and pull out the trailer until it hits the first cross member. Now block the bow behind the cross member, and remove the front bow block, and pull the trailer out more. Now repeat the proces until the trailer is clear.
 

bassboy1

Lieutenant Commander
Joined
Jun 23, 2006
Messages
1,884
Re: Painting a larger boat's hull

Jack up the trailer front and back. Block the boat. take wheels off trailer (so it can go lower) and drop it as low as it can go. Now, all you need are a couple of car jacks and jack stands. The places where the blocks are obviously wont be where rollers are, so you can paint them on the trailer.
 

Bondo

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Apr 17, 2002
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Re: Painting a larger boat's hull

Chris has the Right Idea,.......

But let me Add,.....

There's No Reason to Remove the boat from the Trailer,.......

By lowering the neape to the limit of the Jack travel,+ Blocking the Stern, Then Lifting the neape to the upper limit of the Jack,........
You can Repaint,+ Repair the Hull,+ Trailer on the Back 1/2 of the Boat/ Trailer,........
Then Undo that,+ Do the Same Thing at the Front of the hull,...........
As long as you set the Blocks in the right points,.... You'll be able to touch up those areas After it's back on the wagon.........

You'll be Done in No Time.....

I replaced several Rollers on My wagon a couple years ago,......
All I did was to use a Bottlejack,+ a block of wood to raise the hull Off the rollers a couple of inches,.....
 

iwombat

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Jul 12, 2006
Messages
3,767
Re: Painting a larger boat's hull

Bond-o, that little tip woulda saved me a ton of time with a rivet repair last week.

Shudda asked . . .


Still need to do the paint though, so at least that's something.
 

Bondo

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71,320
Re: Painting a larger boat's hull

Would that be the Trailer Jack,+ Blocking Tip,...??..
Or,....
The Bottlejack Tip,..??.....

I like them Both for 1 Main Reason,..........

No Matter What,.. Slips or Goes Very Badly,........
The Boat can Only fall back onto the Trailer,+ NOT on You........
You might come out Banged Up,..... But you Will Come Thru it..............
It's Much, Much Safer,......
It's just abit of a Pain,..... Working Around the Trailer sometimes...........
 

iwombat

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Jul 12, 2006
Messages
3,767
Re: Painting a larger boat's hull

The trailer jack + blocking tip.

I've been rolling it back and forth in the trailer since some of the repair area is right under the rear roller. Of course, when I roll it back, the rest of the area is then under the roller. So, back and forth it went in between rivets and marine-tex and gluvit.

All I'd need is about 6" of clearance over that roller and I'd be golden. The touch-up bond-o work, sanding, and bottom painting just got a lot less painful.
 

erikgreen

Captain
Joined
Jan 8, 2007
Messages
3,105
Re: Painting a larger boat's hull

Bond-o,

Thanks. I like this idea... I don't need to get the boat all the way off the trailer, just get it off the rollers long enough to replace them as needed and paint the spots they rest on. Plus I really like the fact that the boat can only really fall on the trailer.

Just curious - is support at three points (two at the stern and one on the keel near the bow) considered enough support for the hull for say two weeks without warping problems?

It's only 22 feet but this thing is built like a tank... it wouldn't just crush me, I'd actually splat if it fell on me.

Erik
 

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
28,435
Re: Painting a larger boat's hull

Erik, If you visit a boatyard you will see boats of all sizes (16-50 feet) blocked up two blocks at the corner of the transom, one under the bow.d:)
 

tashasdaddy

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Nov 11, 2005
Messages
51,019
Re: Painting a larger boat's hull

personal i prefer, using cut cross ties or 6x6's. concrete block are known to cause accidents, there ment to be stacked in a bed of mortor, not dry stacked. there edges are not smooth, and they have been known to crack , thus everything coming down at the most inopportune time.. years ago we were pulling the engine and rear end out of a VW Van. it was on block, got the engine & rear end out. block cracked, and the body just gently rolled over on it's side. the 2 of us just rolled it back over, and jacked it back up, after getting jack stands. only one scratch.
 

Bondo

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Messages
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Re: Painting a larger boat's hull

Ayuh,........
3 will Hold it,....
I might Add another pillar of blocking somewhere along the Keel, If you think there's Too much weight on the 1.......

If you're going to use 3 or 4 pillars of blocking,.....

Another little Tip,......

Turn atleast 1 of the pillars so it sits 90* from the rest of them............
It'll give the Same Effect as Cross-Blocking ALL of the Pillars...........:love:
 
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