Aquaship are a series of Aqua type monsters that resemble sci-fi spaceships, similar to Qliphort monsters.
The Aquaship archetype are specifically built to support Normal Summoning and counter Special Summons, especially from the Extra Deck. While they are on the field, they may have effects that grant you an extra Normal Summon, or have the ability to search for other monsters in the Archetype.
This deck is weak against decks that are built around Skill Drain, as when their effects are negated, they slow down the deck as most of them must be Normal Summoned. Also, cards such as Torrential Tribute or the Trap Hole series negate the summons of these monsters therefore restricting the ability of getting them back.