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KATAHDIN armoured ram (1896)


Ships


No Name Yard No Builder Laid down Launched Comm Fate
  Katahdin   Bath Iron Wks 7.1891 4.2.1893 20.2.1896 stricken 7.1909


Technical data


Displacement normal, t

2155

Displacement full, t

2383

Length, m

76.4 wl

Breadth, m

13.2

Draught, m

4.60 mean

No of shafts2
Machinery

2 HTE, 3 cylindrical boilers

Power, h. p.

5068

Max speed, kts

16

Fuel, tcoal 202
Endurance, nm(kts) 
Armour, mmHarvey and NS; side: 152 - 76, uptakes: 152, deck: 152 - 51, CT: 457
Armament

4 x 1 - 57/40-45 Hotchkiss Mk I/II/III

Complement

97



Standard scale images


<i>Katahdin</i> 1898
Katahdin 1898


Project history

Authorized under the Act of 2.3.1889. Intended as a harbour defence ram, she differed from the British Polyphemus to having no torpedo armament.

Ship protection

The 152mm side armour, 76mm at lower edge, was inclined outwards and joined the turtle deck which was 152mm at the edge, then 140mm and 64-51mm at the centre line. The knuckle was backed by 1143mm of timber, and the hull normally 1.5-1.8m maximum above water, was lowered 0.15m for action by water ballast.

Modernizations

None.

Naval service

Katahdin was only commissioned up to April 1897 and again from March to October 1898. Stricken 9.7.1909, she was used as 'Ballistic Experimental Target A' in important firing trials which determined the need for 343mm armour in future battleship designs.