Marina Del Rey is the largest man made marina in the country. It is located in Los Angeles county just north of Los Angeles Airport
(LAX) and ajacent to Venice Beach.
There were over 6000 slips when the marina was built. However, over the past several years the slip count has been reduced as sections of the marina are renovated and larger slips are installed reducing the number of overal slips. It's been a huge point of contention between the boating
community and the local government
There are at least 6 yacht clubs in the marina ranging from the very traditional and expensive to the do-it-yourself type clubs that are quite affordable. I belong to Pacific Mariners Yacht Club, which is one that is about midway between the two extrems.