Ceara was an unusual all-in-one submarine support vessel, constructed in Italy and completed in 1916. She was intended as a combined submarine transport, tender/repair/supply ship, training ship, mobile drydock, and salvage ship. A key feature was a 216-foot docking well at the stern, similar to modern LSD/LPD types, for docking, repair, and transport of submarines. She also featured dual salvage cranes at the stern, capable of lifting 400 tons. Ceara was designed to support a squadron of six submarines, whose relatively primitive and fragile design made such a complex support ship necessary.

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