Ex-NBA Star Kenyon Martin: Hitched On Miami Yacht ... The Bride Wears Black!

Helluva weekend for ex-NBA star Kenyon Martin -- who got married on a YACHT ... off the coast of Miami, TMZ Sports has learned.

Martin tied the knot with his girlfriend Shakira Watson -- who went the non-traditional route and rocked a black wedding dress.

After the ceremony, the couple partied with some of the closest friends -- including ex-NBA star Al Harrington.

Congrats!