Length: 48m
Weight: 1200 t
Width: 7m
Seats up to: 4 people
Max Speed: 50 knots (above water)
27 knots (underwater)
Type: Submarine
Affiliation Ultra Garrison

Hydranger (ハイドランジャー Haidoranjā) (model name: TDF HR - 1 (2)) is a combat submarine used by the Ultra Garrison and the Far Eastern Base of TDF. It can be split into two combat submarines, Hydranger No. 1 and Hydranger No. 2. It's first appearance was in Ultraseven episode 14.