The museum is located at Freatida, near Zea Harbour, in Piraeus and in its halls are exhibited more than 2,500 objects sorted chronologically and thematically, evoking the maritime history and tradition from prehistoric times to the present day. Its Naval Library is also open to the public during the days and hours of operation and consists of more than 17,000 volumes of books and magazines focusing on the naval history, science and art. In its exterior space sculptures and important outdoor exhibits are located such as the conning tower of the historic submarine „Papanikolis‘ and anchors of the ships of the time of the Battle of Navarino.

The museum exhibits approximately 2500 items related to the maritime history of Greece from prehistoric times to the present day and include many ship models and a number of paintings from the late 19th and early 20th centuries.

The museum admits visitors from Tuesday to Saturday at 09:00-14:00. It is closed on Sunday, on Monday and on public holidays. Photography in the museum is prohibited.