We don't have synonyms for boat club yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are book club.
(N) :
A boat club is a sports club serving boat owners, particularly those interested in rowing and yachting, but also kayaking, canoeing, motor boats and other small boats.
(N) :
A boat club is a sports club serving boat owners, particularly those interested in rowing and yachting, but also kayaking, canoeing, motor boats and other small boats.