Submarine is a 1v1 map for StarCraft II. It was introduced in Season 2, 2020 with patch 4.12.0, maintained in the map pool for season 3 of 2020 and season 1 of 2021, and removed from the ladder in season 2, 2021.
Rather small and aggressive map with fewer bases. Although small, the layout is still rather standard, so it allows for all kinds of strategies. The short straight forward attack path is choked off by rocks.