HMS E42 [SEP] manufacturer
HMS E42
HMS "E42" was a British E-class submarine built by Cammell Laird, Birkenhead. She was laid down on 23 October 1915 and commissioned in July 1916. She served during the First World War, hitting with a torpedo the battlecruiser on 25 April 1918 and making an unsuccessful attack on "U-92" on 1 July 1918. 
"E42" was sold for scrap at Poole on 6 September 1922.
Design.
Like all post-"E8" British E-class submarines, "E42" had
E42
E42, E-42 or E.42 may refer to:
- European route E42, a road connecting France, Belgium and Germany
- Esposizione Universale Roma, a business district in Rome, Italy
- HMS E42, a United Kingdom Royal Navy "E" class submarine which saw service during World War I
- Nimzo-Indian Defense, Encyclopaedia of Chess Openings code
- EUR, Rome
- Hanwa Expressway (between Wakayama JCT and Nanki-Tanabe IC) and Kisei Expressway, route E42 in Japan