how to design the spud barge

[Amar Amran]

can someone show me how to design the barge with the spud..I'm stuck with the spud arrangement for the barge..

[PAR]

Are these the mobile spud or fixed spud launchers?

[Amar Amran]

it is the spud for the 250 ft ocean going barge..the barge is used for the pipe lay repair..how to arrange the spud on the barge..if the are any method to calculate or example i can use to do that?

[lewisboats]

"Spud" is something most of us aren't familiar with in the way you are using it. To most folks around here a "Spud" is a slang term for a Potato...(Hence PAR's question about launchers...as in Potato guns and other launchers for on the water fun games/wars between small boats)

Please describe what you are calling a "Spud". What is its function? What does it generally consist of? What is it normally constructed of? Where does it go on the barge?

[Amar Amran]

sorry for not explain more about it..the spud i refer is like in this picture..it is used for stabilize the barge..it's like jack up barge..

[Angélique]

Originally Posted by lewisboats

Please describe what you are calling a "Spud".

Here's a definition for Spud Barge

A spud barge is a form of barge which can be moored through the use of through-deck pilings, known as spuds. Spuds may be fabricated, or made of commercially available pipe sections or logs. Spud barges are commonly used as work platforms, i.e., for crane or demolitions work, in littoral waters (such as rivers or for canal maintenance/expansion).

So spuds are the piles in Amar's pic that go through or alongside the hull to the bottom to moore and stabilize the barge.



Cheers,
Angel

[BPL]

Right. A spud = a piling. I've heard that before.
I've also seen people write pile or spile instead of piling - don't know if they were bad at texting or it's the lingo somewhere.

[Angélique]

'Spud' in Dutch is 'Sputh' . . . . (the link is a Dutch PDF, but it has pics of the design on page 2)

Good luck !
Angel

[Angélique]

Dutch link ---> Google translation in English or Malay or to set above in what ever language you like . . . .

Cheers,
Angel

[Amar Amran]

thank you for all your help..it help me to do the design

[cthippo]

Most spud barges I've seen the spud doesn't go through the deck but rather is attached to the outside of the gunwale with a cable mechanism. The spud (movable piling) moves up and down through a ring or bracket attached to the barge on a cable. The cable is attached to the bottom of the spud and goes through a pulley at the deck of the barge to a winch. When the cable is winched in the spud is lifted clear of the bottom and the barge is free to move. When the cable is let out the spud lowers and buries itself in the bottom acting as an anchor. Because the spud and barge are not rigidly connected to eachother the barge can move up and down on the spud with the tides.

There have been a couple of incidents in the gulf where the spud was not properly secured and dropped unexpectedly, rupturing undersea pipelines. The odds on that seem incredible, but it's happened a couple of times I'm aware of.

[CatBuilder]

I've seen the same as Cthippo and would suggest another mechanism, which is used on a lift barge (with spuds) that I really like:



The lift spuds also are in "rings" welded outside the deck (not through the deck) and have huge linear teeth on them running the length. There is a hydraulic lift mechanism that turns cogs that move the spuds in either direction, lifting the barge many feet in the air.

[Angélique]

Originally Posted by cthippo

There have been a couple of incidents in the gulf where the spud was not properly secured and dropped unexpectedly, rupturing undersea pipelines. The odds on that seem incredible, but it's happened a couple of times I'm aware of.

Murphy's law . . . . .

Cheers,
Angel

[Yobarnacle]

The picture showing a crane barge with 2 spuds on one end is for construction, not pipe laying.
Better to put spud wells at all 4 corners, and in use, one spud aft and one spud forward, both on same side. Better longitudinal stability.
Pipe laying barge normally has a pipe carrying material barge alongside spudded side, stacked with pipe. Pipe is swung into position on deck, chamfered and welded to existing pipe. then lay barge shifted ahead. There is a big rubber tired brake with rollers that maintains tension on pipeline, so weight of pipeline doesn't drag if off of barge. Shiftimg is normally done with 9 anchors. Spread of 2 from each corner, and 1 more abeam amidship on up current or windward side.

Spuds need be sufficiently strong to hold not only lay barge, but pipe laden material barge, and the tug landing and taking material barges away.