H.M.S. E 42 (1915)

H.M.S. E 42 (1915)
Pendant Number:	E.42^[1]
Builder:	Cammell Laird^[2]
Launched:	22 Oct, 1915^[3]
Commissioned:	Feb, 1916^[4]
Sold:	Sep, 1922^[5]

H.M.S. E 42 was one of fifty-seven "E" class submarines completed in Britain before and during the Great War.

Service

On 29 April 1917, E 42 torpedoed UB 23 at 52deg 48' N., 3deg 33' E., but the torpedo's warhead failed to detonate.^[6]

She made an unsuccessful attack on U 92 south of Dogger Bank on 1 July, 1918. The two torpedoes fired missed their target.^{[Citation needed]}

E 42 torpedoed Moltke while she was was returning to base in difficulty on 24 April, 1918.^[7]

At the end of 1920, she was one of eight "E" class boats of Group "J" in reserve at Rosyth under the collective command of Lieutenant Charles E. A. W. Cox, and tender to Dolphin.^[8]

Captains

Dates of appointment are provided when known.

Lieutenant John G. Bower, 9 February, 1916^[9] – 12 June, 1917^[10]
Lieutenant-Commander Charles H. Allen, 12 June, 1917 – 24 March, 1919
Lieutenant in Command Denis W. Granet, 9 September, 1919^[11] – 24 September, 1919^[12]
Lieutenant in Command Thomas I. S. Bell, May, 1920 – 30 September, 1920 (and 8 other Group "J" submarines in Reserve at Portsmouth)
Lieutenant in Command Charles E. A. W. Cox, 1 October, 1920^[13]^[14] – 20 March, 1921^[15] (and seven other "E" class boats)