The designer's laconic introduction: "This is a set of wargames rules for pre-dreadnought naval battles between 1890 and 1913 (no dreadnoughts fought before 1914!), prompted by the re-discovery of some 30-year-old 1/1500 models, but equally suitable for contemporary 1/6000 models."
Focusing on manoeuvre rather than the technical detail of ships, the rules allow large actions to be fought in a reasonable amount of time.
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DBSA is one of the prototype DBA-like Rules Phil's had out for a long time,while he released a prototype set (never further developed or released commercially) players have modified this and a collected set incorporating modifications, variants and optional rules has been in widespread use since 2007
- NB DBSA was also the original name for the first version of DBA released at Wargames Developments Conference, UK