Bay seniors with a fondness for seaworthy cinema should check out the films being shown on board the Balclutha, the 3-masted schooner docked in Maritime Park. Tonight Russell Crowe buckles his swashes in Master and Commander. On August 23 Shelley Winters goes down with the ship in The Poseidon Adventure and on September 22 Moby Dick spouts again. Open seating starts at 7:30, films at 8:30 and they’d like you to donate $5-$15. Limited seating.