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Old 03 April 2019, 22:05   #1
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Kiwiboyd's Mercury Bolts fail (initial assessment)

I didn't see anyone else post this:
https://youtu.be/42a5ZX3d5FU

He loses one engine on one of his 10m ribs.
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Old 04 April 2019, 00:19   #2
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Iíll have to watch that with sound. Iím not sure cutting it loose is the answer Iíd choose.

It may not be worth much after what happened to it but it has to be worth less on the bottom of the ocean.
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Old 04 April 2019, 01:09   #3
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Good reason to have two outboards?
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Old 04 April 2019, 02:29   #4
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Saw that video last night and was surprised that there were only four bolt's holding such a large engine. I think he had little choice but cut that engine free. I think that he would be charged a lot of money for a tow back to shore. Nice rib bright to a standstill "all for the want of a horse shoe nail" . How many here actually check engine mounting bolts after the engine was put in place?.
I know the rib was traveling fast but the sea conditions were good for that speed.

Tsm
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Old 04 April 2019, 03:13   #5
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Having been in a similar'ish situation when a yacht I was on was dismasted we faced the question of cut it loose or try and get it back on board. We were concerned that the remains were going to damage the hull and I suspect he may have been in the same predicament or it could have damaged the other engine.

For him, getting it back on board wasn't really an option as it probably weighs 300kg.

Watching the video the only thing I'd have done differently would have been to put a rope on it before cutting it loose. You could then have suspended it just below the boat and out of harms way whilst you pondered your options.

If the water was shallow enough, you could buoy it so it would have been easy to retrieve or tow it into shallower water before buoying it. You'd need a lot of fenders to make it float so that wouldn't really be an option.

From my mast incident, having a bucket in which to put split pins, washers, nuts and anything else you've removed to set the thing free is useful if only to prevent them from disappearing into the bilges.
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Old 04 April 2019, 08:16   #6
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Kiwiboyd's Mercury Bolts fail (initial assessment)

The other side of the coin is once that engine ingested water at supercharged velocities it hydro locked and probably blew everything engine block related to pretzels. It may very well just be a boat anchor now.

And I will be checking my mounting bolts the next time I work on the boat.

Jason
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Old 04 April 2019, 12:10   #7
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I think that the video clearly shows the professionalism of the skipper .......... he was in control of the whole situation with no panic and knew exactly what he was going to do ...........


Apart from that ........ stainless bolts aren't exactly grade 9.9 HT .... Hmmm, use bigger bolts !
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Old 04 April 2019, 17:04   #8
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Originally Posted by Bigtalljv View Post
And I will be checking my mounting bolts the next time I work on the boat.
Too right! Of the three bolts left none had nuts on them. Looks like dodgy rigging to me. I bet they use nylocs as lock nuts next time!
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Old 04 April 2019, 17:18   #9
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Originally Posted by gpsguru View Post
I think that the video clearly shows the professionalism of the skipper .......... he was in control of the whole situation with no panic and knew exactly what he was going to do ...........


Apart from that ........ stainless bolts aren't exactly grade 9.9 HT .... Hmmm, use bigger bolts !
+1...handled the situation well....(would have been more impressed if he'd been wearing a life jacket)
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Old 05 April 2019, 01:53   #10
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The loss of a thirty thousand dollar engine would make me cry
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