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UNITED KINGDOM
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ACHILLES broadside ironclad (1, 1864)


Photo



Achilles with three masts.

Ships


Name

No

Yard No

Builder

Laid down

Launched

Comp

Fate

Achilles     Chatham DYd 1/8/1861 23/12/1863 26/11/1864 base ship 1902


Technical data


Displacement normal, t

9820

Displacement full, t 
Length, m

115.8 pp

Breadth, m

17.8

Draught, m

8.28

No of shafts

1

Machinery

sails + 1 2-cyl HSE, trunk, 10 rectangular boilers

Power, h. p.

5722

Max speed, kts

14.3

Fuel, t

coal 740

Endurance, nm(kts)1800(6.5)
Armour, mmiron; belt: 114 with 457 - 254mm teak backing, battery: 114, bulkheads: 114
Armament

16 x 1 - 241/15 'Somerset' 100pdr SBML, 4 x 1 - 183/17 110pdr 82cwt BL

Complement

705



Graphics


<i>Achilles </i> with three masts.
Achilles with three masts.


Ship project history


Modified Warrior with the same basic design and machinery and improved protection. Boiler pressure was 1.8kg/cm2 instead of 1.4kg/cm2 on earlier ironclads.

110pdr BL guns were installed on the upper deck, 'Somerset' guns were at the middle ports of the battery. Later 68pdr guns were added at the end ports of the main battery.

Ship was completed with 4-masted rig, sail area was 4090m2 including stunsails. So, Achilles had the largest sail area ever provided in a British warship with 4 masts. Sail arrangement was unsatisfactory. Ship manoeuvred better than Warrior and steamed and sailed well under most conditions.

Ship protection


4.0m-high waterline belt over full hull length was 114mm-thick, 63mm beyond the battery. The battery armour was 64.7m long, enclosed at the ends by 114mm bulheads to the full depth of the side armour. The steering gear was fully protected. The stem was of blunt ram form. Achilles became one of the best early ironclads. Ship had double bottom.

Modernizations


1865: bow mast and bowsprit were removed; + 6 x 1 - 206/15 68pdr 95cwt SBML

1866: foremast was moved fwd 7.6m, bowsprit was replaced, sail area was 2800m2.

1868: ship was completely rearmed with 4 x 1 - 203/15 MLR Mk III, 22 x 1 - 178/16 MLR Mk III

1874: - 4 x 1 - 203/15, 20 x 1 - 178/16; + 14 x 1 - 229/14 MLR Mk IV

1877: three masts were removed, ship was reduced to barque rig

1889: - 2 x 1 - 178/16; + 2 x 1 - 152/26 BL Mk III/IV/VI, 8 x 1 - 47/40 3pdr Hotchkiss Mk I, 16 MGs, 6 x 1 - 11.4/87

Naval service


Sea service of Achilles ended in 1885. She was converted to base ship and renamed Hibernia. In March 1904 ship was renamed Egmont, in June 1916 Egremont, in June 1919 Pemroke and ultimately sold 26/1/1923.