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CAPITAL SHIPS AND MONITORS
CANONICUS monitors (1864 - 1871)


Photo



Mahopac in the Appomattox river 1 January 1864

Ships


No Name Yard No Builder Laid down Launched Comm Fate
  Canonicus, 6/1869- Scylla, 8/1869- Canonicus   Harrison Loring, Boston 1862 1/8/1863 16/4/1864 sold 2/1908
  Catawba   Alex Swift & Niles Wks, Cincinnati 1862 13/4/1864 never (completed 10/6/1865) to Peru 4/1868 (Atahualpa)
  Mahopac   Secor, Jersey City 1862 17/5/1864 22/9/1864 sold 3/1902
  Manayunk, 6/1869- Ajax   Snowden & Mason, Pittsburgh 1862 18/12/1864 1/1/1871 (completed 27/9/1865) to Naval Militia 9/1895-7/1898, sold 10/1899
  Manhattan, 6/1869- Neptune, 8/1869- Manhattan   Perine, Secor, Jersey City 1862 14/10/1863 6/6/1864 for disposal 12/1901
  Oneota   Alex Swift & Niles Wks, Cincinnati 1862 21/5/1864 never (completed 10/6/1865) to Peru 1868 (Manco Capac)
  Saugus, 6/1869- Centaur, 8/1869- Saugus   Harlan & Hollingsworth, Wilmington 1862 16/12/1863 7/4/1864 sold 5/1891
  Tecumseh   Secor, Jersey City 1862 12/9/1863 19/4/1864 sunk 5/8/1864
  Tippecanoe, 6/1869- Vesuvius, 8/1869- Wyandotte   Miles Greenwood, Cincinnati 9/1862 22/12/1864 24/1/1876 (completed 12/1865, delivered 15/2/1866) station ship 1879, to Naval Militia 1896-4/1898, sold 1/1899


Technical data


Displacement normal, t

2100

Displacement full, t 
Length, m

68.0 - 68.6

Breadth, m

13.1 - 13.2

Draught, m

3.78 - 3.96 mean

No of shafts

1

Machinery

1 Ericsson VL, 2 Stimers or Martin boilers

Power, h. p.

320ihp

Max speed, kts

8

Fuel, t

coal 140 - 150

Endurance, nm(kts) 
Armour, mm

iron; side: 127 - 76, turret: 254, deck: 38

Armament

1 x 2 - 381/12 long Dahlgren SB

Complement

100



Standard scale images


<i>Saugus </i>1864
Saugus 1864


Graphics


<i>Mahopac</i> in the Appomattox river 1 January 1864
Mahopac in the Appomattox river 1 January 1864
<i>Manhattan</i> 1880s
Manhattan 1880s
<i>Canonicus</i> as seen on 12 June 1907 at Hampton Roads
Canonicus as seen on 12 June 1907 at Hampton Roads


Ship project history


This class were improved Passaic, with wood and iron upper and iron lower hulls, modified in accordance with war experience. The four ships not commissioned during the war, were built on the Ohio river, three at Cincinnati and Manayunk as far up as South Pittsburgh. The hull lines were improved and designed speed is given as 13 kts but there was no hope of getting near this. Canonicus and later monitors had the 381mm guns longer than in the Passaic class and fired with their muzzles outside the turret.

Ship protection


The 5x25mm side armour was backed by two iron stringers 165mm deep and 152mm thick for 21.3m from the bows, but 102mm elsewhere, and the armour lower edge was 3 x 25mm. The turret, of 6.4m internal diameter, had 10x25mm plates as did the pilot house above, and the funnel base was also armoured. The turret skirt was protected by a 127mm thick 381mm high ring fixed to the deck.

Modernizations


None.

Naval service


Tecumseh was mined in Mobile Bay 5/8/1864. Wyandotte was first commissioned only 24/1/1876, till 1879 served as station ship at Washington, loaned to Naval militia in 1896 but recommissioned to the Navy for Spanish American war 30/4/1898. In September 1898 she was decommissioned and sold in January 1899.