A single side platform, located on the waterfront of Tokyo Bay, serves one line for both inbound and outbound trains.

The exit is located opposite the buffer stop, with simplified Suica terminals and a ticket disposal box.

The station has been unstaffed since 1 March 1971, although the adjacent Toshiba guardhouse is staffed 24 hours a day.

Toshiba owns the land beneath the station and the surrounding portion of the Tsurumi Line, and JR East operates both under a long-term lease.

Because of the surrounding scenery, and its status as "the station which you can never leave", Umi-Shibaura has been featured in several books and television programs and has gained some popularity as a day-trip destination.