75th Anniversary of the Golden Gate Bridge & Seamen's Memorial Cruise Sunday, May 27, 2012 - Boarding 9am, Departure 10am, Returns 2pm Departs from Pier 45, Fisherman's Wharf, San Francisco, CA In recognition and remembrance of merchant mariners and the maritime industry. An annual tradition for the O'Brien, our Seamen's Memorial Cruise is to honor the men and women who built, sailed and protected Liberty ships during World War II.