We Were Anchored Three Days From the Nearest Mechanic When the Raw Water Pump Quit
We Were Anchored Three Days From the Nearest Mechanic When the Raw Water Pump Quit. The Bolt Was Right There. Nothing in My Kit Could Reach It.
June 1, 2026 · 9 min read
Susan and I sold the house for this. Then a thirty dollar pump tried to take it all back.
There is a law of sailing that every cruiser learns the hard way. The part that fails is always the one bolt you can see and cannot turn. And on an auxiliary diesel, it is always behind the alternator or buried against a motor mount.
I am not a mechanic and I am not selling anything. I am a sixty-six-year-old retired guy who sold his house, bought a boat, and learned that the cruising life is ninety percent sunsets and ten percent lying upside down in the bilge swearing at a bolt.
I am writing this for every sailor who has ever opened the engine box, looked at the back of the diesel, and felt that drop in the stomach. Because a stranger at a boatyard in Indiantown handed me the answer, and he asked me to pass it on.
Why that bolt is buried, in plain English
When the builder dropped that diesel into the boat, they fit it into a box the size of a kitchen cabinet under the companionway steps. To save space they tucked the raw water pump and the impeller in behind the alternator, and ran the worst of the bolts down against the motor mounts. On a drawing, there is room. At anchor, on your knees, with one arm in past the elbow and a flashlight in your teeth, there is not.
The bolt is not the problem. The bolt is just steel. The problem is the geometry of every tool that will physically fit in that box.
I tried everything in the boat. Here is what each one did.
- Standard ratchet. The handle hit the engine bed before the socket reached the bolt.
- Stubby ratchet. A few degrees of swing, on a bolt that needed a real pull.
- Flex-head ratchet. Bent in past the alternator, seated, then folded the instant I loaded it.
- Universal joint. Deflected sideways and walked the socket right off the head.
- Wobble socket. Gave me the angle and stole the torque.
The yard wanted a boat unit. And three weeks.
Here is what the boatyard does not put on the brochure. The marine diesel mechanic runs a hundred to two hundred dollars an hour, plus a fee just to come down the dock. To get at some of these jobs they haul the boat out of the water, and that is hundreds more before anyone touches a wrench. A thirty dollar impeller becomes a bill the cruisers call a boat unit. A thousand dollars. And right now good marine mechanics are vanishing. You wait weeks. Your weather window leaves without you.
So I sat in the cockpit at dusk with grease to my elbows and a thirty dollar part I could not install, looking at the prettiest anchorage in the Keys, thinking about the house we sold. Susan brought me a plate and a cold drink and did not ask how it was going. She has been sailing with me long enough to read my face. She just said, we will figure it out. She always means it.
One arm past the elbow, a light in my teeth, and a bolt I could touch and could not turn.
Then a retired mechanic at the boatyard handed me a bar
We limped in under sail and a tow to the do-it-yourself yard at Indiantown. A fellow named Walt was working on his own boat two stands over. Seventy-one. Thirty years a marine diesel mechanic before he and his wife went cruising. He listened to me describe the pump for about a minute, nodded the way old hands nod, and reached into his bag.
A slim flat steel bar, about a foot and a half long, square drives on both ends, a gentle bend in the middle. He had me press my thumb inside the drive end. Something moved. A roller chain, running the length of a sealed steel housing.
"The chain takes the bend for you."
The thin body slides flat into the box where nothing else fits. The chain carries the torque around the bend, dead square on the bolt, no matter what you put on the handle. Walt told me he has pulled raw water pumps, heat exchanger zincs and alternator bolts on more boats than he can count with a bar like it.
The sealed chain is the trick
A roller chain inside the steel body carries torque around the bend, so it never folds like a flex-head or walks like a u-joint.
Slides flat behind the alternator
A slim half-inch-thick bar fits the gap behind the alternator and motor mounts where no ratchet can swing.
Your own sockets
Square drive on both ends takes the metric sockets already in your kit. No proprietary anything.
It reaches. It is honest.
This solves access to a bolt you cannot get a tool on. It is the right geometry for the box, not a miracle for a fitting corroded to nothing.
It only comes from one place
You will not find it at West Marine or any chandlery. The maker sells direct from their own site only. Eighty-nine dollars, shipped to your door. That is less than one hour of a marine mechanic's time, and half a boat unit, for the one tool that turns the jobs that strand you into a twenty-minute fix at anchor.
What happened next
Other cruisers who stopped paying for access
"Changed my impeller without pulling the alternator for the first time in fifteen years of owning the boat. Two pulls and it was off. I actually laughed in the bilge."
"The heat exchanger zinc that drops onto the motor mount bolt. You know the one. This bar got it in thirty seconds. The yard wanted a half day haul-out for it."
"Bought a cheap one off Amazon first. It folded behind the alternator just like my flex-head. The real one with the chain does not flex. Night and day."
Walt learned it from a fellow at the dock years ago. Now he keeps a count, and he is passing it on.
Get yours before your next splash
If you sail with an auxiliary diesel, and you have ever lain in the bilge looking at a bolt you could see and could not turn while the anchorage waited, you already know exactly what this is worth.
The Cruisers' Log is a reader-supported publication. This is a first-person account from a sailboat owner and reflects his personal experience. The Savary offset extension wrench is a hand tool designed to reach fasteners in tight, blind locations. It improves access to a bolt; it is not represented as a remedy for fasteners that are corroded or seized beyond normal service. Always follow proper service procedures and torque specifications. Results vary by vessel and condition.
