Can someone tell me how they do this?

MothBalls · 09-16-09, 05:56 AM

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?

Rough seas, Iceland

antikristuseke · 09-16-09, 06:06 AM

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

Skybird · 09-16-09, 06:08 AM

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

Schroeder · 09-16-09, 06:35 AM

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

Letum · 09-16-09, 06:45 AM

That's a steady hand the camera man has.

Oberon · 09-16-09, 06:54 AM

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

Letum · 09-16-09, 06:59 AM

Quote:

Originally Posted by Oberon

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

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?

Oberon · 09-16-09, 07:04 AM

Quote:

Originally Posted by Letum

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.

Schroeder · 09-16-09, 07:05 AM

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.

Oberon · 09-16-09, 07:05 AM

Quote:

Originally Posted by Schroeder

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

Ramius · 09-16-09, 07:09 AM

That's just a big swell thats all

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

Oberon · 09-16-09, 07:24 AM

Quote:

Originally Posted by Ramius

That's just a big swell thats all

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

The term peas in a drum come to mind

antikristuseke · 09-16-09, 07:25 AM

Quote:

Originally Posted by Schroeder

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.

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

Dowly · 09-16-09, 07:56 AM

Quote:

Originally Posted by Schroeder

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.

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).

AVGWarhawk · 09-16-09, 08:01 AM

Quote:

Originally Posted by Dowly

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).

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

09-16-09, 05:56 AM	#1
MothBalls Ace of the Deep Join Date: Aug 2006 Posts: 1,012 Downloads: 20 Uploads: 0	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? Rough seas, Iceland

09-16-09, 06:08 AM	#3
Skybird Soaring Join Date: Sep 2001 Location: the mental asylum named Germany Posts: 42,602 Downloads: 10 Uploads: 0	You better don't need to visit the toilet in that kind of weather...!? And no tea for me, thanks. __________________ If you feel nuts, consult an expert.

09-16-09, 06:35 AM	#4
Schroeder Navy Seal Join Date: Apr 2008 Location: Banana Republic of Germany Posts: 6,170 Downloads: 62 Uploads: 0	Seat belts are such a great invention....I hope they have some... __________________ Putting Germ back into Germany.

09-16-09, 06:45 AM	#5
Letum Navy Seal Join Date: Feb 2005 Location: York - UK Posts: 6,079 Downloads: 43 Uploads: 0	That's a steady hand the camera man has. __________________

09-16-09, 07:05 AM	#9
Schroeder Navy Seal Join Date: Apr 2008 Location: Banana Republic of Germany Posts: 6,170 Downloads: 62 Uploads: 0	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. __________________ Putting Germ back into Germany.

09-16-09, 06:06 AM	#2
antikristuseke Silent Hunter Join Date: Jun 2007 Location: Estland Posts: 4,330 Downloads: 3 Uploads: 0	If i had to guess, mine would be they brace and bend their knees a bit absorb the bumps.

09-16-09, 06:54 AM	#6
Oberon Lucky Jack Join Date: Jul 2002 Posts: 25,976 Downloads: 61 Uploads: 20	I feel sorry for the mechanic, the constant lifting of the screws must play havoc with the engines.

09-16-09, 07:09 AM	#11
Ramius Commander Join Date: May 2001 Location: At sea (again) Posts: 457 Downloads: 43 Uploads: 0	That's just a big swell thats all Try going through someting like that in a boat - then you know what its like to get thrown around __________________ There is a forgotten, nay even forbidden word, which means more to me than any other. That word is England