135 ft Passenger Catamaran

Photo of Cetus

In the spring of 2015 Vigor began construction of four all-aluminum, 400 passenger ferries for WETA (the Water Emergency Transportation Authority) in San Francisco, CA. The Hydrus, Cetus, Argo and Carina are part of WETA's planned expansion of ferry service on the San Francisco Bay and Vigor has been honored to participate in WETA'S ongoing fleet renewal process. 

Designed by Incat Crowther, Australia, the 135’ x 38’ all-aluminum catamarans are environmentally friendly and efficient.  They are equipped with a selective catalytic reduction (SCR) after-treatment system developed by Pacific Power Group and are powered by two MTU 12V4000 M64 engines. They are able to burn biodiesel B5 and thereby further reduce emission, a high priority for the City of San Francisco. 

Each ferry has a service speed of 27 knots and a smooth, quiet ride thanks to its “floating house.” The superstructure has 180 independent mounts. The engines and wheelhouse sit on isolation mounts while the gears are hard mounted. This configuration greatly reduces vibration, increasing passenger comfort.  

All four ferries will be delivered by the end of 2018.


Class name: Hydrus
Type: 400 Passenger Ferry
Length (Overall): 135’0" (41.1m)
Beam (Overall): 38’0” (11.6 m)
Draft (Max): 6’ 75” (2.0m)
Cruising Speed: ~27 knots
Engines (Tier III): (2) MTU 12V4000 M64, 1950 BHP each
Transmission: ZF 7600
Propellers: Michigan Wheel, CX-500; NiBrAl, 5 bladed
GENSETS: Pacific Power MG115 99kWe
  • Resiliently mounted house reducing vibration & noise
  • MTU SCR After Treatment System
  • Bicycle storage

Images from this Project

Click images to enlarge.

Photo of Cetus
Aluminum Welder working on Hydrus
Fabrication photo of Hydrus in process
Fabrication photo of Hydrus
House being lowered onto the hull
Photo of Argo, the third of four WETA ferries