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Subject: 
Re: Iron Clads
Newsgroups: 
lugnet.western, lugnet.pirates, lugnet.build.military
Followup-To: 
lugnet.pirates, lugnet.build.military
Date: 
Sat, 9 Apr 2005 16:55:44 GMT
Viewed: 
52 times
  
In lugnet.western, Lindsay Frederick Braun wrote:
   In lugnet.western, David Little writes:
   Has anyone out there tryed to build any Iron Clads ships from the Civil War Era. Just curious.

It depends on what you mean by “Ironclads.” I’ve done ironclads, but they’re the oceangoing European sort--really overgrown frigates-- not the coastal or riverine sort that usually is associated with the US Civil War. (Sorry, no pics at the moment--the Gloire page is still offline.) An “ironclad” is technically a ship with a wooden hull sheathed in iron; thus, the French Gloire was a true ironclad, while the British Warrior isn’t (it’s still in existence at Portsmouth, thus the “is”) because the actual hull is iron, though some wood is used in the armour to absorb shot energy; the Confederate Virginia (ex-Federal Merrimack) was a true ironclad, the USS Monitor really wasn’t/isn’t (it was built completely of iron, IIRC). 1

Actually some wood was used:

” The ship would be 172 feet long with a 41 foot 6 inch beam. Two 11 inch guns would be housed in a revolving turret. The ship would have a flat deck with only 18 inches of free board and a draft of 10 feet 6 inches. This would allow her to operate in any of the South’s inland waters. Ericsson began to send out drawings and specifications to a host of iron works and yards. There were many alterations that had to be made to meet the restrictions and limitations of the North’s already over worked iron industry. He originally intended to construct the turret with two layers of 4 inch thick iron plate, but when the Baltimore yard of Abbott & Sons informed the engineer that it would take two months to “re-tool” their equipment, Ericsson altered his design for eight layers of one inch thick plates (192 tons of plate). The majority of the iron plates, bolts, nuts, rivets, etc., were manufactured by New york establishments. Holdane & Company, the Albany Iron Works, and the Rensselaer Iron Works provided tons of flat plates, and angle iron. The Niagara Steam Forge would pound out the eight inch thick port stoppers. The turret and machinery were fabricated by the Novelty Iron Works.

Ericsson’s concept was simple. Building an iron vessel was not new to the inventor. Living in England the 1830’s, Ericsson was employed by the Laird Brothers Yard (builders of the C.S.S. Alabama) where he helped design and build iron vessels for operation on the Thames River. He claimed to learn a lot from his time there and it was also about this time that he first came up with the concept for a “sub aquatic vessel.” His new vessel would be constructed entirely of flat iron plate. The plates were made “rigid” by riveting angle iron to the facings and along the edges. The vessel was actually constructed as “two hulls” an upper and a lower. The lower hull was built entirely of iron. The outer hull plates were 7/16” inch thick. The upper hull was a composite of wood and iron. The ships deck was supported by 10 by 10 inch oak beams. The deck planking was 7 inch thick pine and oak beams. Two layers of 1/2 inch thick iron plates were spiked to the wood deck. The side of the vessel was actually an armored shelf. The shelf was riveted to the lower hull and packed with oak and pine beams and had 5 layers of 1 inch thick plate spiked in place over the wood making her side just under 3 feet thick. When completed, the side armor was virtually impenetrable to the heaviest shot and ramming.

The iron turret had an interior diameter of 20 feet. The eight layers of 1 inch thick plate were assembled around an iron skeleton. The entire structure was powered by two “donkey engines” that turned massive gears and provided the turret with 2 1/2 r.p.m. The turret revolved on a brass ring set into the deck. A shaft from below was raised up by a wedge and “keyed up” to put the turret in motion. The entire structure was temporarily assembled at the Novelty Iron Works. When it was completed, all the pieces were marked and taken apart and shipped to the Continental Iron Works for re-assembly on the ship. ”


  
I’ve been kicking around building a late-war Montauk-style Union monitor, but the biggest problems, quite honestly, are the dadgummed round turrets. 2

I am posting to this older tread to point-out my turret see:

http://news.lugnet.com/pirates/?n=4235

I hope you like it.

   The hulls are quite easy by com- parison. Confederate ironclads like Virginia and Tennessee are easier only because they’ve got deckhouses instead of turrets, but I’ve still had little luck with those--they have conical ends to the gun deck, another bear to render. (This may not be true viz. Tennessee--drawings and paintings I’ve seen vary, much as they do for Hampton Roads and the actual appearance of the combatants there.)

There were smaller river ironclads that had square deckhouses; well, not actually square, but kind of pyramidal (if you cut the top 4/5 off the pyramid, that is). Those could be done with 4 or 8 of the MTT 2x2x3 steep-slope dkgrey corners, methinks. Barring that, med-slope corners may be passable.

I suppose the short answer, then, is “not really.”

best (and hopefully informatively?),

Lindsay

Xpost -> .pirates, .boats for their considerable expertise; FUT -> .western solo 3 again.

1 The uncertainty regarding the verb tense reflects uncertainty in the current status of Monitor. It’s not afloat, but its sunken hull off Cape Hatteras is still popular with more... ‘adventurous’ divers. By my last reckoning, there was talk in the US Navy about conserving the hull where it lies--it’s in serious danger of deteriorating to the point of unrecognition, and it is still technically a war grave and the property of the USN.

2 These were the ones with two turrets, each with two 11” Dahlgren guns.

3 Not “western solo” as in Roy Rogers singing alone...



Message is in Reply To:
  Re: Iron Clads
 
(...) It depends on what you mean by "Ironclads." I've done ironclads, but they're the oceangoing European sort--really overgrown frigates-- not the coastal or riverine sort that usually is associated with the US Civil War. (Sorry, no pics at the (...) (24 years ago, 31-Jan-01, to lugnet.western, lugnet.pirates, lugnet.boats)

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