Editing Spelljammer Vessels (section)

===Locust===
::Cost: 375 to 500 gp to 1,500(typo or black-market prices?) 
::Ship Type: Flitter
::Tonnage: 3/4
::Hull Points: 1 (8 normal pc hp)
::Crew: 2/3
::Manueverability Class: A
::Landing - Land and Water
::Armor Rating: 4
::Saves As: Light Wood
::Power Type: Rudder of Propulsion
::Ship's Rating: 6
::Standard Armaments: 1 Light Catapult (aft) or Light ballista (Foward)
::Cargo: 750 pounds of Greek/Alcamy fire, ammunition, or one passenger
::Keel/Beam: 14 ft/4 ft.

Basically a two-man starfighter, but a cheap speedboat, maybe a WWII Japaness dogfighter is a better comparison.  As the same suggests, they move fast, they die in one hit, roll a nat 1 on your attack roll and the ship snaps in half and crushes you to death, and they swarm like crazy. For each Tsunami ship, it is escorted by at least 20 Locusts.