large naval submarine moored at san francisco pier, equipped for communication and surveillance.

water clouds seafowl calm periscopes surveillance dock ropes seabirds antennas nautical beach seabreeze museum location chains seascapes seagulls seaworthy tower cloudy maritime pier reflection seashells horizon submarine port conning seafolk coastal landmarks scene seafog sails waves moored tranquility seafaring ship sunlight sky historic city seafarer seafloor collection seashore buoy vessel