Can someone tell me how they do this?
 

Do they have seatbelts in the bridge? If you were standing in the bridge, you're looking at moving up and down at least 10-15m (30-45 feet), it not more, in just a couple seconds. One would think you'd be pretty beat up by the end of the day.

What about all of the equipment everywhere on the ship? Most importantly, what if you had to take a dump? They have seatbelts in there?


http://www.youtube.com/watch?v=mPBaqh3dcVM
Rough seas, Iceland

If i had to guess, mine would be they brace and bend their knees a bit absorb the bumps.

You better don't need to visit the toilet in that kind of weather...!? And no tea for me, thanks.

Seat belts are such a great invention....I hope they have some...:o

That's a steady hand the camera man has.

I feel sorry for the mechanic, the constant lifting of the screws must play havoc with the engines. :doh:

Anyone know why a ship I was on shook very violently every time the
screws came out of the water?

I know it's a bad thing to happen, but why would the whole boat shake or
vibrate so much?

Shaft vibration I think, IIRC when the screws come out of the water, the lack of resistance makes them rev up and the sudden increase of revolutions makes the shaft shake and can lead to shaft damage which is why usually as soon as it starts to happen the engineer has to cut power and let the screws spool down until they hit the water again.

Higher revs of the engine and the shafts?

@Oberon

If I had to build a ship I would put a RPM limiter in it so that the engines can't overrev any more.
I'm not sure whether ships really have something like that, but it sounds logical to me.

One would hope that modern ships have such a thing :yep:

That's just a big swell thats all :arrgh!:

Try going through someting like that in a boat - then you know what its like to get thrown around :yeah:

The term peas in a drum come to mind :arrgh!:

Rev limiters are not completely foolproof. Allos the immediate reuction of resistance will cause problems.

I believe that an RPM limiter wouldnt work as it is more due to the sudden disappearance of the water resistance. Basically, the engine runs at the same RPM all the time, but when in water, the RPM cant grow as high as if out of water (because of the water resistance). :hmmm:

:yep:

I believe they still have to work the throttles when the stern breaches.