Tag Archives: diving

2010 Week 6 in Review

This week I had to give up and put a slow bell on the reversing mechanism until I find a piston shaft and hub. Just as a precaution, I visited the Dominion to see if they have a Westinghouse reversing mechanism. Maybe they can help engineer the one for the Maris Pearl1.

A Thanks for Shilshoal Marina

Also this week, we took the Maris Pearl to the Shilshoal fuel dock where we used their bilge pump-out service – a very economical way to get rid of oily bilge waste. Thanks, folks – we hope to keep using this service for years to come.

A visit to Brady’s Atlas-Imperials

I visited Brady on Whidbey Island to take a look at his two Atlas-Imperial diesels. He has a three-cylinder model we estimate as from about 1923 – making it one of the three oldest Atlas Imperial diesels that I know of. Even better, it will run again: very little stands in the way of Brady reassembling the engine and running it.

His four-cylinder needs a bit more work, but can be parted out if it’s found to be beyond rehabilitation:

This first meeting was a great chance to take inventory and document progress on the engines, especially the three-cylinder that Brady’s working on. OTM Inc will be cheering on, encouraging and bothering him throughout the project, it’s that great.

For the rest of you with never-ending projects, consider employing OTM Inc to be the monkey on your back in case your wife is not enough: we have reasonable hourly, weekly, or long-term rates!

Olympic Display

While coming back from Whidbey Island, I noticed that the ferry had a display set up of the ferry Olympic‘s steering gear:


More Diving with Sterling

Sterling Marine Services Llc and I dove at the Center for Wooden Boats again to put more barrels under their docks.

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2010 Week 4 in Review

Valve-grinding: a team effort

This week, I finished cleaning all the valves for the Thea Foss. Engineer Ron ground the valves and observed that “the first one is fun and the rest of the 24 are boring,” which I definitely agree with. Then Vince came out of retirement and over the mountains to grind the seats, and we had a nice team to get the job done efficiently.

A visit to the Cape Cross

Later this week, I visited the crew of the Enterprise-powered fish tender Cape Cross. The engine’s running well and best of all, the boat is gainfully employed.

Dry-suit repairs

After last week‘s brush with carotid sinus reflux, diver Duane helped me replace the neck seal in my dry suit. Apparently adding a latex neck seal to a neoprene suit is pretty common, and it’s an easy process. First, I coated the sealing area with AquaSeal and let it cure, then I put another coat on to adhere the latex. Then I trimmed it and put one more bead of AquaSeal on edges, and the suit was ready to go.

Giving the CWB a lift

On Saturday, I worked with Sterling Marine Services Llc to level out some of the floating docks at the Center for Wooden Boats by installing some new barrels. Once we got we got a system down, it went really fast. Sterling Marine Services Llc has posted more about it in their brand-new blog here.

Repairs and updates on the Island Champion

I visited the Island Champion this week to isolate the overboard through-hull fixture from the engine. This is an area of excessive stray voltage, which induces electrolysis in the surrounding planks and makes them rot out a lot faster – according to our resources, it’s like nail sickness from increased alkalinity.

I installed piece of hose to separate the engine from the through-hull fitting, which disrupts (in theory) the electrical current running between them:

This should hopefully stop the electrolysis and save the hull timber a little longer.

Also, boat buyers take note: the Island Champion is not for sale anymore.

To bond or not to bond

This brings up the age old-argument: “to bond or not to bond.”

To bond, or not to bond: that is the question:
Whether less noble metals should suffer
The slings and arrows of outrageous corrosion,
Or to take arms against a sea of troubles,
And insulate them. To dielectric: to isolate;
No more; and by isolate to say we end
The corrosion and the thousand natural shocks
That hulls are heir to, ’tis a consummation
Devoutly to be wish’d. To dielectric, to isolate;

On the subject of galvanic corrosion: the way I read it, impressed current is best but anodes are easier and more common. If using anodes, quantity and placement are very important to get right and bonding or isolating is addressed on a case-by-case basis.

Some fittings below the waterline, if isolated, can take a long time to degrade, while others will need to be wired to the anode using a resistance-free electrical circuit with heavy-gauge wire, good connections, and keeping it out of the bilge water. When working with mili-volts, a loose connection is no connection: the mili-volt will not jump a gap. I think it is this sloppy wiring that causes bias in our maritime tradesmen.

More important than the bonding and anoding, boats and equipment should be inspected and repaired regularly – and repairs should be made before small problems are catastrophic. It pains me to hear folks argue about bonding while the boat is sinking. While limiting galvanic activity is important – keep it in perspective!

Update on the Maris Pearl

Meanwhile on the Maris Pearl, we’re down to just looking for the shaft that attaches to the piston in the reversing mechanism and the camshaft gear.

Who’s got one? Any drawings? Anything? Help?

Work begins on the Arthur Foss

The Northwest Seaport started their “Stop the Leaks” project on the Arthur Foss; it sounds like the first step was to take off the big rubber fender on the bow. They took a lot of pictures of it – and better yet, wrote a blog about it! Check it out here!


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2010 Week 3 in Review

More work on the Maris Pearl

I’m still working on the Maris Pearl‘s reversing mechanism, trying to track down parts for it. I’ve been working with suppliers and calling collectors and engine owners I know who have spares. The Westinghouse controls rarely need attention, so there’s not a lot of information available on these units. It’s taken some extra time to search it out.

Winter Work on the Thea Foss

The Thea Foss‘s twin Atlas-Imperials are getting some attention this winter. The boat’s engineer worked with Dan to remove all the valves, start valves, and injectors out of both engines, then I spent a lot of time this week disassembling and cleaning everything.

As you remember, this process involves disassembling them each, putting them in a solvent bath, flushing the water jackets, sand blasting and another solvent bath, flapper the guide, and wire-wheel the stems.

2010 M4 Party

The big annual art and music event that OTM helps sponsor now has a not-for-profit fiscal sponsor, so make your donations out to Shunpike, with M4 mentioned as the program.

This year’s show will be the 10th annual, on May 1st. The steering committee is planning furiously, and it’ll be even bigger and better than last year (always our goal).

Working on the bow thruster

We got the new parts and tools to fix my good customer’s bow thruster, but still got caught inadequately prepared. I had to run out in the middle of the job to get more parts.

I also had a problem with my dry suit: the neck seal was too tight. Apparently, this can cause Carotid Sinus Reflex, when your neck seal presses against the carotid artery and makes your brain think your blood pressure is too high and lower your pulse rate to compensate.

The symptoms can include nervousness and a shortness of breath, which at the time I attributed to being out of practice from not diving enough. While it is true I am a little out of practice, the nervousness and shortness of breath were actually due to the neck seal. I’ll replace this before next week, in time to dive next Saturday at the CWB.

Despite all this, we still got the bow thruster fixed right up.

Boats for sale

The Pacific Sunrise is for sale. It’s a sweet boat with an Atlas-Imperial 6HM1125 diesel, and is going for $75,000.

The Island Champion is also for sale. She’s a great boat with a Fairbanks-Morse 35F14 diesel.

Bonus! Mention this ad and get a free OTM Inc T-shirt with your purchase!

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2010 Week 2 in review

The Maris Pearl‘s new control head

This week I kept working on the Maris Pearl‘s reverse mechanism. I continued disassembling it and cleaning the useable parts, then I went through all our books to get as much info as I could, and put in a parts order with Bruner and Striegel Supply.

Sterling quality for all your diving needs

Later in the week, I got a call from a good customer with a line stuck in the bow thruster.

Sterling and I geared up and dove on the boat on Saturday; we got the line out okay, then found that the prop nut was loose. We pulled the nut off and found that the threads were gone, so we made a plan to get the necessary equipment to finish the job next Saturday.

OTM’s preferred vendor for underwater work is Sterling Marine Services Llc., a newly formed father-and-son company that’s enthusiastically gaining both momentum and gear. With luck – or at least with the energy of a young wharfrat businessman – the company will profit enough to send the kid to college.

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