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Author Topic:   What Goes Wrong With Older Boston Whaler Boats
RocketMan posted 06-22-2013 01:45 PM ET (US)   Profile for RocketMan   Send Email to RocketMan  
As Boston Whalers age, and even with good maintenance, what goes wrong when?

I'm seeing a lot of 10, 20, 30 years and older Whalers for sale. Some of these vintage and classic boats have, IMHO, more desirable lines, features, and construction than today's boats. Or at least, I'm more able to afford them.

A philosophy that I think works well from an affordability perspective is 'old boat, new motor'. I estimate that philosophy will net you 95% of 'new reliability' for a fraction of the cost with a Classic 16 footer anyway.

My own experience with a 1968 Sakonnet:
o Hull is still solid after 45 years.
o Wood required significant maintenance at times over the years and is in need of replacement now.
o Internal wiring from the console to the bowlight corroded away just under the light 25 years ago and we got around that by adding a light to the top of the windshield.
o Rails are all good but screws holding them into the hull from time to time need to be torqued, increased in size, or the hole filled and redrilled.
o Rub rail needed replacement over ten years ago.
Boston Whaler sticker is pretty faded.

Repower and undamaged hulls don't bother me. Internal wiring is a concern, as are built in fuel tanks, and any internal hull damage, which I guess would occur primarily form a leak. Anything 'above hull' isn't a significant concern because it can be visually inspected and it can be accessed.

I'm wondering what to look out for in an 'upgrade' in the 22-25 ft. classes that we're seeing on the market blog because I'm heading in that direction.

EaglesPDX posted 06-22-2013 05:57 PM ET (US)     Profile for EaglesPDX    
Biggest problem with older Whalers is water infiltration into the foam and wood. It pretty much guts the boat. You will pay more than the boat is worth to fix the problem.

My fuel tank cavity foam was completely saturated.

I created a sump in the foam at the transom end of the fuel tank cavity and put in bilge pump and use that to constantly pump out the fuel tank cavity water in hopes I'll actually start drying the foam out. I'm sure I'll pay a price for this sooner rather than later with the aluminum fuel tank corroding from the moisture.

Had I known about the saturation problem and the water in the foam in my '89 boat, I would not have purchased it even though it was the boat of my dreams when I was a kid.

Other big issue with older Whalers is they are not self bailing. You have to store them up out the water with the bilge plugs out to keep them dry and keep you automatic bilge pump from killing your batteries.

I do store mine out of the water on an AirDock and I installed manual bilge pumps in all the bilge areas (two rear and one front) and pump out after rains so I don't have to keep pulling the bilge plugs. I do pull them for winter storage.

But the killer for older Whalers is the water in the foam and wood.

RocketMan posted 06-23-2013 08:49 AM ET (US)     Profile for RocketMan  Send Email to RocketMan     
RE: water in the foam and wood

Any non-destructive methods of detection? Weighing a boat, even just a 16 footer, would be difficult to detect down to a gallon at around eight pounds. X-ray comes to mind but seems in-feasible. Vacuum-humidity? Press on the hull? Tap tap? Through small access hole, say 1/4 in. dia. could slip in a fiberscope and get a visual, that seems feasible but not many sellers are going to jump at that.

jimh posted 06-23-2013 09:41 AM ET (US)     Profile for jimh  Send Email to jimh     
Ingress of water into the foam of Unibond hulls in the larger Boston Whaler boats, 22-feet and longer, does not seem like a really common problem. I can't recall the last report of a classic Boston Whaler 22-foot or longer hull that had a problem with water intrusion. Water intrusion seems more common in the 13-footers that have been beaten up, lost gel coat, and neglected. It can occur in the larger boats, but not with the same frequency seen in very old 13-footers that have been beaten and abused.

Rotted wood reinforcement of the central deck covering the fuel tank cavity is more common. Wet foam surrounding the fuel tank is a problem, too.

For more information on deck wood reinforcement replacement and evacuation of wet foam, see

http://continuouswave.com/whaler/reference/centerDeckRepair.html

http://continuouswave.com/whaler/reference/outrageRestore.html

http://continuouswave.com/whaler/reference/outrageRestore2.html

Wet transom wood is a concern. This can easily occur if the engine mounting holes were not properly sealed. The lower holes are always immersed in water, and likely to be a source of infiltration.

For advice about finding water intrusion, a frequently asked question, see this portion of the FAQ:

Q3: Is There Water In My Hull?
http://continuouswave.com/whaler/reference/FAQ/#Q3

My experience with c.1987 and newer classic hulls has been very good. The only components that I have needed to replace have been opening deck hatches, pry-out access plates, and windshield supports bars.

For details about pry-out deck access plate replacement, see

Pry-out Deck Access Plate Replacement
http://continuouswave.com/ubb/Forum3/HTML/019387.html

For details about opening deck hatch replacement, see

REVENGE Walk-Through Deck Opening Hatch Replacement
http://continuouswave.com/ubb/Forum3/HTML/017057.html


I have had very good luck with rubber fuel hoses, but they are good candidates for replacement on older boats, particularly if the original rubber hoses are pre-1987, which is an epoch date. Rubber fuel hoses should be marked "Alcohol Resistant", and, if not, the should be replaced.

The main fuel filler hose that runs horizontally across the deck to the fuel tank is often found to be soft and permeable. It is difficult to replace with the fuel tank cavity deck cover in place, but it can be done.

The electrical power distribution on older boats typically needs some updating. For some details see

Secondary Power Distribution Refurbished on c.1990 Whaler
http://continuouswave.com/ubb/Forum6/HTML/003179.html

EaglesPDX posted 06-23-2013 10:31 AM ET (US)     Profile for EaglesPDX    
My experience for a well cared for '89 Whaler is that I would guess all older Whalers have water in the foam to some degree.

Every fitting is a conduit for the moisture. The older the boat, the more likely the fitting is a conduit for moisture.

Climate boat is stored in (rainy NW) or inside/outside, in water, covered etc. likely has a lot to do with it.

After I bought the boat. I was removing screws in the transom from 20 years of mounting [unclear, probably intended to say SONAR transducers]. Previous owner would put a screw in vacant hole using sealant and paint over it. These screw holes were weeping water when removed. Uh oh...saturated transom.

Only way to know how bad is drill in and see how the wood in the transom is. I did this found spots but overall, including a one inch core sample at the apex of the hull was solid. The water would have migrated there. Yard did a knock test of the transom, agreed it was sound.

Installing electronics and pulled up the rear deck and found the fuel tank cavity totally saturated. Again from various and fittings leaking water.

Installed the sump in the fuel tank cavity, had the transom sanded and painted with all the holes plugged. Had about 100 deck fittings (canvas snaps mostly) removed, sealed and painted over.

Weighed the boat (always tricky especially with guessing how much is in 129 gallon tank based on the gauge) I would guess I have 20-40 gallons of water in the foam all told. Ideally would have removed the deck, removed the tank and saturated foam, new foam, new tank but that was cost prohibitive.

It is taking a long time to get the water out of the fuel tank cavity foam. It migrates slowly. Even after a year I will always have an inch or two of water in the sump after a day or two.

Local boatyard has worked on problem for people who want to restore Whalers or other foam cored boats. They drill holes and use the vacuum bagging from their fiberglass boat building tools to drain as much water as they can from the foam. In their view, the Whaler foam does not break down and even saturated, retains some floatation ability.

jimh posted 06-24-2013 08:56 AM ET (US)     Profile for jimh  Send Email to jimh     
Moved to REPAIRS/MODS.
hullinthewater posted 07-24-2013 04:11 PM ET (US)     Profile for hullinthewater  Send Email to hullinthewater     
Rocket-
I agree with Eagle, but like so many other issues, it's all about use and care by all previous owners.
The worst case scenario, other than hidden or poorly repaired structural damage, is water ingress to saturate foam and/or transom. In the worst cases you might see tell-tales, such as water 'marks' inordinately high at the transom, or localized swelling or cracks where saturated wood has dried and swelled too many times. If deck has sat flooded for a rainy season, sometimes the gel coat surface will display a lot of very small 'crazing' or cracks where the wood beneath was saturated, but dried out. Wood is amazingly resilient material, but only up to a certain number of saturation-dry cycles before being reduced to balsa.
Don't know how practical it would be, but if you were able to shop southern cal, I would guess the water saturation issues would be a lot less than other parts of the country.

Feeling your pain Eagle.
When I purchased my SuperSport [now a Montauk type clone], I knew that I would strip and restore the hull to as water tight as it could be and given that its a unibond- hull- deck assembly, it was easy w/out 'below deck holds'.
But I did go thru quite a 'West System-Microlite' hole filling excursion, followed by a couple coats of Awlgrip, but glad I did. While replacing the brass tube drains with fiberglass ones, I was able to assess the dryness of the foam and transom wood.
For the time I own the boat, I have determined there is nothing I need installed, other than the outboard, that can't be done without West System, 3M 5200 or 4200. Between fiberglass round and square tube stock or StarBoard, nearly everything can be secured to the boat without metal fasters penetrating the deck, hull or transom, with as good or better strength than penetrating fasteners.

Closing in on 25+ years old, I'd say this boat will be around another 25, if maintained, even if made a permanently slipped boat. It also helps that in southern cal, on average, we get less than 1/8" rain a day, and all of it from January to April.

jimh posted 07-24-2013 06:13 PM ET (US)     Profile for jimh  Send Email to jimh     
Again, I completely disagree with the notion put forth here that all older Boston Whaler boats have water in their hulls. I have never seen in-person an older Boston Whaler 22-foot or larger hull with any sort of significant problem with water intrusion into the Unibond hull. Unibond hulls have some water in them from the day they were made; it is just a by-product of the foam expanding and creating some moisture that can be trapped. Even on boats that spend almost all their time on land, on a trailer, and have been meticulously cared for, I have see moisture come out of the Unibond hull from holes for fittings. But these boats are not weighted down with water in their foam interiors, nor is the hull strength compromised.

There are, of course, some boats that may have picked up water from neglect to seal fittings, but I don't think you can characterize all older Boston Whaler boats as having that problem.

The mention of wet foam surrounding the fuel tank is a completely different situation. This condition is seen in some boats when not much attention was paid to water on deck getting into the tank cavity, but I don't think it is a widespread problem, and it would be a mistake to characterize all older boats as having this problem.

dfmcintyre posted 07-24-2013 08:09 PM ET (US)     Profile for dfmcintyre  Send Email to dfmcintyre     
I think there's just too many variables to determine by weight how much water is in the hull. First problem is the accuracy between the factory scale and the scale being used by the owner.

The factory made a minimal attempt at preventing water intrusion in the tank cavity, in my opinion. Aside from the caulk around the deck plate, there was still openings all around the area.

Regards - Don

hullinthewater posted 07-25-2013 02:02 AM ET (US)     Profile for hullinthewater  Send Email to hullinthewater     
Well, the original poster may believe that water ingress (by whatever means) is a given in older whalers, but I never stated it's a broad-based view. After all, if it were true, it would have been well documented by now on the abundance of boating forums.

I think it's true that one of the worst boat maintenance problems to have to deal with in a used boat (or some new ones too) is water ingress into the hull (with or without foam floatation). Second on the list would be hull blistering advancing to delamination, but that's a separate discussion.

Regarding any boat purchase, it's paramount the buyer carefully assess and know what you're getting for the negotiated price. The best built boats won't last long if continually neglected or abused. Boston Whalers are no exception, but few boats have been as well documented as Boston Whalers. Maybe not a good analogy, but Whalers remind me of GM-350 engines: proven, popular, and still being recycled, built-up, upgraded, etc.

I had only heard good things about Boston Whalers from a friend who owned one and from reading at various boat forums, but I looked at about four before I bought mine. And, of those other three, they were in good shape for 25-year-old's, with only simple and standard replacement items to be addressed. I just wouldn't pay the asking for them.

dg22 posted 07-25-2013 02:51 PM ET (US)     Profile for dg22  Send Email to dg22     
I have 1967 13 footer which has been well used over the years and the waterline is where it should be, the hull does not crack over the winter and when submerged it still floats and keeps the engine above water, as it should. I don't think all production runs (new and old) have the same degree of a problem with water infiltration -- I do believe that the closed cell foam works, maybe not as good as what the marketing department says. The reason I say this is because I have a 10 year old raft with closed cell foam which is exposed for an entire summer and it does not become water logged by the end of the summer. There is some penetration of moisture but not even close to becoming water logged. I know there has been well documented cases of whalers becoming water logged but I don't believe this is the norm even if the foam was exposed from screw holes or small cracks. Just my two cents.

I'm amazed that my 46 year old Whaler is still original. Most boats of this vintage after 20 years needed a new floor, transom and sometimes stringers.

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