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Hey! Remember Clamps?

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  • Member since
    October 2019
  • From: New Braunfels, Texas
Hey! Remember Clamps?
Posted by Tanker-Builder on Wednesday, April 20, 2022 6:34 PM

 When I wrote:

         I needed Clamps for a Ship model of a Laker for U.S.Steel for a friend. Well, He will give me the name tomorrow.This fellow does large and small clamps in H.O.Scale. I did a wee bit of research today and as a mariner was astounded by what I found out. Number one, Lakers have ballast tanks ( Of Course) But! Here's the Killer. I don't know about New Builds, But the old ones didn't have WATERTIGHT Bulkheads breaking up the holds into independant sections!

     So picture a Ship Like the Edmund Fitzgerald! Over 700 ft. long and no Bulkheads sectioning off the hold. One hatch fails and you got the whole cargo area flooding and according to the items I read. Capt. Mc Sorley was  asked by the Man on the other vessel the Anderson, that as how he had a list was he running his pumps. Replied Capt. McSorley "Yes, Both are running!" Hmmmm! A ship that large and she only had two? They must have had a heck of a lot of power!

     Why, on my Destroyer we had pumps in every major, in Hull, compartment and Watertight Doors. Plus there were Watertight doors above main deck too.!In reality I cannot imagine a ship as big as the U.S.S.Piedmont ( A Destroyer tender, 794ft. long,L.O.A.) not being divided into sections that could be closed off in case of flooding!

 These Fresh water Sailors, Knowing this had more You Know What than I . If I found that out about a ship I was signing on to I would NOT put My John Hancock on those ship's articles,For Sure!!

  • Member since
    April 2005
Posted by ddp59 on Thursday, April 21, 2022 9:51 AM

the U.S.S.Piedmont was not 794ft. long,L.O.A.

Length 530' 6" Beam 73' 4" Draft 24' 6" http://www.navsource.org/archives/09/03/0317.htm

the Booklet of General Plans USS Prairie AD-15 1968 states 529.5' oa

  • Member since
    March 2022
  • From: Twin cities, MN
Posted by missileman2000 on Thursday, April 21, 2022 12:05 PM

The designers of the lakers did not expect to be subject to shell fire, though.  Ships on Great Lakes were supposed to put into port to avoid storms. But of course time is money, so....

  • Member since
    August 2019
  • From: Central Oregon
Posted by HooYah Deep Sea on Thursday, April 21, 2022 12:16 PM

I read somewhere that not only were there a serious 'bunch' of those clamps per hatch cover; they had to be set in a particular order to make a good seal, and you needed a six foot bar to set them.

Also, there are some videos 'out there' that show a laker out on big seas and you can watch as they sag and hog and twist. It's amazing that they don't all snap in two.

"Why do I do this? Because the money's good, the scenery changes and they let me use explosives, okay?"

  • Member since
    October 2005
Posted by CG Bob on Thursday, April 21, 2022 8:25 PM

Boatnerd.com is a site on Great Lakes shipping.  Lots of photos in their gallery.

  • Member since
    August 2019
  • From: Central Oregon
Posted by HooYah Deep Sea on Thursday, April 21, 2022 10:10 PM

If you look close, you'll notice that the center vessel is actually a pusher tug and barge.

"Why do I do this? Because the money's good, the scenery changes and they let me use explosives, okay?"

  • Member since
    October 2005
Posted by CG Bob on Friday, April 22, 2022 10:46 AM

That's the Integrated Tug/Barge unit PRESQUE ISLE.  Here's s shot of the  tug.

  • Member since
    October 2019
  • From: New Braunfels, Texas
Posted by Tanker-Builder on Sunday, April 24, 2022 11:13 AM

UhOh!ddp59!

 I misquoted,Sorry!

  • Member since
    October 2019
  • From: New Braunfels, Texas
Posted by Tanker-Builder on Sunday, April 24, 2022 11:17 AM

Hmmm!CGBOb!

      Now that is an interesting looking Marine Critter. I have heard of them, But, this is the first time I've seen a modern one!  That would make a neat Model! What's the H.P. rating?

  • Member since
    November 2005
  • From: Formerly Bryan, now Arlington, Texas
Posted by CapnMac82 on Sunday, April 24, 2022 11:49 AM

There are only a few of those, and they are "married" to specific barge units.  Which often have large overboard unloading booms, and significant bow thrusters.  All of which want connections bat to the towboat.

I want to remember the one in the photo is 2x 6000hp but I can't remember if that's deisel-electric, or direct drive.  I want to remember quoted top speed is 16kts with barge.

The lake bulk carriers seem to have settled on a 11' wide hatch dimension, and the width suitable for the specific ship's beam.  That hatch width accommodates the tipping ore chutes of the loading docks.

The cargo hols of the self-unloader ships have a central conveyor spanning the cargo holds to be passed to the unloading boom.

They use a rolling gantry to lift the hatches off as a single unit.  These are stacked on the adjacent  hatch in an alternating fashion.

  • Member since
    October 2005
Posted by CG Bob on Sunday, April 24, 2022 9:12 PM

The tug PRESQUE ISLE has twin Diesel engines connected to chanagble pitch props through a gear box for a total of 14,840 BHP.  When mated with the barge PRESQUE ISLE their combined length is 1000'.

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