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Vigor delivers low-emission Hydrus for San Francisco service

May 19, 2017 09:22 AM

The Tier 3 ferry is one of the first with advanced exhaust aftertreatment

Courtesy Incat Crowther

The following is the text of a news release from Incat Crowther:

(SAN FRANCISCO) — Incat Crowther announced on Friday that Hydrus, the first in a series of 400-passenger catamaran ferries for WETA, the Water and Emergency Transportation Authority in San Francisco, is completed and has entered service. Built by Vigor in Seattle, Wash., Hydrus is the first of this new class of vessel with additional ferries to follow.

“In the spring of 2015, Vigor began construction on the first of two WETA ferries in this class,” said Tim Kolb, general manager of Vigor Ballard.“It’s an efficient design and very environmentally friendly."

Following trials of the first vessel, two additional vessels were ordered by WETA. “The four Vigor vessels will play critical roles in maintaining service reliability in WETA’s planned expansion of the ferry service on the San Francisco Bay,” said Nina Rannells, WETA executive director.

Hydrus is powered by a pair of MTU 12V4000M64 EPA Tier 3 main engines, each producing 1,453 kW. One of the earliest passenger vessels to enter service with advanced exhaust aftertreatment, the system ensures Hydrus complies with the latest U.S. emissions regulations and is one of the lowest-emission ferries currently operating in North America. Incat Crowther worked with suppliers to create an efficient layout for the system that minimizes noise ingress to the cabins and has minimal effect of passenger flow and operations.

Hydrus has a top speed of 29 knots and a service speed of 27 knots under full load at reduced MCR. The vessel also demonstrates low wake-wash characteristics.

Hydrus will be joined mid-year by a second vessel, Cetus, with a further two vessels due in 2018.

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