The Seaplane Hangars at the Seaplane Harbour accommodate the Lembit submarine, built in 1937 by the British Vickers–Armstrongs shipyard; a Short 184 seaplane; the Maasilinn ship (i.e. the oldest sunken ship discovered in Estonia’s waters); and numerous other genuine items, like sail ships, boats and naval mines.
Besides that, there are the MARU restaurant and a museum shop, cinema rooms, simulators, children’s area and much more. In parallel with the permanent exhibition, the museum offers various seasonal exhibitions on maritime affairs or maritime history.
There is a playground for children and a functioning port in the outdoor space, which also hosts the Suur Tõll icebreaker and other museum ships.