Depends on how big your boat is.
:boat:
BS 8450:2006 "Code of practice for installation of electrical and electronic equipment in ships" covers vessels of 500 grt/50m length or bigger. It "gives recommendations for the design, installation and maintenance of electrical equipment for the generation, storage, conversion, distribution and utilization of electrical energy for all purposes in ships of all descriptions, including, where relevant, inland and harbour craft, but excluding ships of war." It's 62 pages long.
IEC 60092 consists of many parts, e.g. 301 (generators and motors), 302 (low-voltage switchgear and controlgear assemblies), 303 (transformers for power and lighting), 352 (choice and installation of cables for low-voltage power systems) etc etc.
BS EN 60092-507:2000 "Electrical installations in ships - Part 507: Pleasure craft" covers vessels of length 24m to 50m, not exceeding 500 grt; single phase <=250V, three phase <=500V, d.c. <=50V. It also covers three phase in vessels <24m. It is 44 pages long.
BS EN ISO 10133:2012 and BS EN ISO 13297:2012 cover small craft: extra-low-voltage dc. installations and alternating current installations respectively. It covers small craft up to 24m. They are 17 and 27 pages long.
So there's no equivalent of a single, handy, 498 page book that you can buy from Waterstones for ÂŁ85 I'm afraid.
:boat: