Boarding a ship - SailNet Community
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post #1 of 9 Old 05-08-2018 Thread Starter
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Boarding a ship

Pilot Boards His Ship, Hopping Aboard It While It Passes By - Digg
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post #2 of 9 Old 05-08-2018
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Re: Boarding a ship

Smooth move, El Capitan
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post #3 of 9 Old 05-08-2018
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Re: Boarding a ship

This will probably be considered blasphemy here since the prevailing opinion seems to be that anything regarding the cruise ship industry belongs to the devil, but I have often watched the pilots board the cruise ships we have been one in pitching seas at around ten knots, jumping from either big top little or little to big depending on if we were coming or going....... It looks like aa thrill ride to me every time I watch.
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post #4 of 9 Old 05-09-2018
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Re: Boarding a ship

Quote:
Originally Posted by Rocky Mountain Breeze View Post
I have often watched the pilots board the cruise ships we have been one in pitching seas at around ten knots, jumping from either big top little.. .
I think 4 knots is about the standard... But that's still fast when you're in the little boat.

I don't remember reading of any fatalities.

Not my sort of job

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Re: Boarding a ship

Gives new meaning to " Walking the Plank" ( ducking)
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post #6 of 9 Old 05-09-2018
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Re: Boarding a ship

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Originally Posted by MarkofSeaLife View Post
I think 4 knots is about the standard... But that's still fast when you're in the little boat.
True, but, the key is to "lock" the pilot boat to the side of the ship. Turn the bow of the pilot boat in towards the hull of the ship until the pilot boat is resting on its shoulder (keep powered up to match speed).

The water passing between the hulls increases in velocity, relative to the sorrounding water. With increased velocity there is a corresponding increase in pressure (bernoullis principle), this increase in pressure holds the boats together amazingly well.

I have done this at up to 30 knots in RIBs, but below both boats hull speed is generally a bit easier and safer.

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post #7 of 9 Old 05-09-2018
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Re: Boarding a ship

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Originally Posted by Arcb View Post
True, but, the key is to "lock" the pilot boat to the side of the ship. Turn the bow of the pilot boat in towards the hull of the ship until the pilot boat is resting on its shoulder (keep powered up to match speed).

The water passing between the hulls increases in velocity, relative to the surrounding water. With increased velocity there is a corresponding increase in pressure (bernoullis principle), this increase in pressure holds the boats together amazingly well.

I have done this at up to 30 knots in RIBs, but below both boats hull speed is generally a bit easier and safer.

Technical quibble: The increase in velocity of the water between the hulls would decrease pressure, as a result of the Bernoulli effect.
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post #8 of 9 Old 05-09-2018
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Re: Boarding a ship

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Originally Posted by CrispyCringle View Post
Technical quibble: The increase in velocity of the water between the hulls would decrease pressure, as a result of the Bernoulli effect.
Good, catch, and correct, my brain is still functioning on half its coffee cylinders. Increased velocity causes a low pressure, which is what is sucking the hulls together.
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post #9 of 9 Old 05-09-2018
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Re: Boarding a ship

Much ado about reaction time. Transferring scientists mid Atlantic to the Hudson (5000 T) from another vessel .Big sea running .Idea was to grab ladder at top of wave ,continue climbing up as lifeboat drops 15' Oops. already on the way down. PhD's must slow the reaction as he's still there as we pass him on the next wave up. How nobody was killed is just one of the mysterious things that happens at sea.
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