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USS Cohoes (1865)

Civil War-era monitor of the United States Navy

Field	Value
section1	{{Infobox ship/image
section2	{{Infobox ship/career
country	United States
flag
name	USS Cohoes
ordered	April 1863
laid_down	1863
launched	31 May 1865
commissioned	Never
fate	Sold, July 1874
section3	{{Infobox ship/characteristics
class
displacement	1175 LT
length	225 ft
beam	45 ft
draft	9 ft
propulsion	Screw Steamer
speed	9 kn
complement	69 officers and enlisted
armament	2 × 11 in smoothbore Dahlgren guns
armor	*Turret: 8 in
*Pilothouse: {{convert	10	in	mm	abbr	on}}
*Hull: {{convert	3	in	mm	abbr	on}}
*Deck: {{convert	3	in	mm	abbr	on}}

Pilothouse: 10 in
Hull: 3 in
Deck: 3 in '*USS Cohoes''' — a single-turreted, twin-screw monitor — was still under construction at the close of the American Civil War. She was a *Casco''-class, light-draft monitor intended for service in the shallow bays, rivers, and inlets of the Confederacy. These warships sacrificed armor plate for a shallow draft and were fitted with a ballast compartment designed to lower them in the water during battle.

Design revisions

Though the original designs for the Casco-class monitors were drawn by John Ericsson, the final revision was created by Chief Engineer Alban C. Stimers following Rear Admiral Samuel F. Du Pont's failed bombardment of Fort Sumter in 1863. By the time that the plans were put before the Monitor Board in New York, NY, Ericsson and Stimers had a poor relationship, and Chief of the Bureau of Construction and Repair John Lenthall l had little connection to the board. This resulted in the plans being approved and 20 vessels ordered without serious scrutiny of the new design. $14 million US was allocated for the construction of these vessels. It was discovered that Stimers had failed to compensate for the armor his revisions added to the original plan and this resulted in excessive stress on the wooden hull frames and a freeboard of only 3 inches. Stimers was removed from the control of the project and Ericsson was called in to undo the damage. He was forced to raise the hulls of the monitors under construction by 22 inches to make them seaworthy.

Fate

As a result, the Cohoes was laid up at League Island Navy Yard, in 1867. Her name was changed to Charybdis on 15 June 1869 and back to Cohoes on 19 August 1869. She was sold in July 1874.

References

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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