rss icon Subscribe
desktop mobile

Marine News Boat of the Month: March 2018

rr-tug-sf-bridge.jpg

Marine News

Baydelta's First Hybrid Tractor Tug

Jensen Maritime was recently selected to provide the design for Baydelta Maritime's new 100-foot, Z-Drive hybrid tugboat. It will use Rolls-Royce hybrid technology and represents the first installation of a hybrid system for Nichols Brothers Boat Builders (NBBB), and the first hybrid tug designed by Jensen to enter the construction phase. Scheduled for delivery in the first quarter of 2019, the tug will feature the same ship assist and tanker escort capabilities of existing Valor class harbor tugs, but with multiple operational modes.

The Rolls-Royce hybrid system allows for the vessel to operate direct-diesel, diesel-electric or fully-electric while assisting the large containerships and tankers that operate in U.S. West Coast ports. This concept will save fuel and reduce emissions, while supplying Baydelta with the same power and vessel characteristics needed for their operations. The flexibility provided by the drive system will allow loitering and transit at up to 7-8 knots in electric-only mode, then a bollard pull of 90, or nine short tons, in combined diesel-electric mode.

Notably, the order represents the first hybrid tug using proven Rolls-Royce hybrid technology.

The 100-foot long tug will feature greatly improved towing performance. Rolls-Royce will supply all electric motors, shaft generators and a power management and control system. The Hybrid arrangement provides power to US255 azimuth thrusters with ducted fixed pitch propellers that can be rotated 360 degrees around the vertical axis. This arrangement optimizes omni-directional thrust and maneuverability as well as providing improved crash stop capability.

Rolls-Royce and Baydelta have been working together since 1990s, when the San Francisco-based operator specified its first azimuth thrusters. Since then Baydelta's entire fleet of tractor tugs is equipped with drive units.

Baydelta Maritime specializes in escorts and assists in the San Francisco Bay and is committed to keeping the bay safe and efficient. With the new hybrid tug, this will be the seventh NBBB built tug in Baydelta's fleet; though, the first hybrid tractor tug. In addition to the drive units and hybrid system, Rolls Royce will be supplying the control system and main switchboard, electric motors and their control cabinets.

Baydelta's hybrid tug at a glance
Class: ABS
LOA: 100'
Beam: 40'
Berthing: 8
Engines: (2) Caterpillar C3516 C Tier 3 diesel
Engine Distributor: Peterson Power, Portland, Ore.
Z-drive System: (2) Rolls-Royce 255FP
Generators: (3) CAT C9.3 generator
Winches: Rapp Marine
Fuel: 71,000 gallons
Fresh Water: 4,300 gallons
Bollard Pull: 90 short tons
(As published in the March 2018 edition of Marine News)

Mar 12, 2018

 

Shipbuilding

ABS Guidance Simplifies Yacht Plan Approval Process

Image: ABS

ABS has published Guidance Notes on Yacht Design and released new Yacht Structure Assessment

Trafigura Names First of 35 New Tankers

Photo: Trafigura Group

Singapore's commodity trading company Trafigura Group has named the first of its 35 crude oil and

WE Tech Equips World’s First Dual-fuel Handysize Bulker

The first LNG dual-fueled handysize bulk carrier in the world, M/V Haaga, features a range of energy efficiency solutions on board (Photo: ESL Shipping)

The world’s first liquefied natural gas (LNG) dual-fueled handysize bulk carrier, M/V Haaga

Vessels

WE Tech Equips World’s First Dual-fuel Handysize Bulker

The world’s first liquefied natural gas (LNG) dual-fueled handysize bulk carrier, M/V Haaga, was delivered from Chinese shipbuilder from Jinling Shipyard in Nanjing to Finnish

MAN Propulsion for 7 Russian Factory Trawlers

(Image: MAN Energy Solutions)

MAN Energy Solutions said it has won the contract to supply propulsion systems for seven new

Hydra Preparing for Offshore Upturn

The SAT-14 diving system (Photo: Hydra)

Offshore and subsea construction company Hydra said it has entered into the saturation diving

Maritime Apps