Fast Ferry Gets a New Power Package

By Maritime Reporter & Engineering News
Friday, December 06, 2013
Seastreak’s Wall Street Repower Synopsis Installed power: Reduced from 5696 kW to 3680 kW (35%) Fuel consumption: Reduced 30% (est. $500,000/year) Weight: Reduced 15 tonnes CO2 emissions: Per-passenger value halved

While many owners discuss ideas to suitably maintain maritime service while slashing operating costs, Seasteak LLC, owners a 43m fast ferry Wall Street, put words into action with a dramatic propulsion switch that saw the company maintain sailing schedule and speed while reducing fuel consumption 30% and CO2 emissions 50%.
Wall Street, a 43m fast ferry owned by Seastreak LLC of Atlantic Highlands, NJ, was originally built by Gladding-Hearch Shipbuilding and launched in 2003, the third of four sister vessels. As built, Wall Street was equipped with four KaMeWa A50 waterjets powered by four Cummins KTA50 diesel engines of 1424kW each and a total output of 5696 kW. At the time of construction, the vessel was state-of-the-art, and the four-engine package was selected with an emphasis on speed and reliability on the Atlantic Highlands, NJ, to Manhattan service.
As the equipment aged and fuel prices skyrocketed, however, the decision was taken to investigate repower options for the ferry, as the owner sought a reduction in both emissions and fuel consumption, as well as reduced maintenance cost and reduced wake during operation.
Seastreak’s director of vessel engineering developed estimates based on Servogear’s Ecoflow Propulsor concept. In cooperation between Servogear, Norway, Incat Crowther Design (the vessel’s original designer) and Seastreak, the repowering was studied.
With the assistance of a U.S. government energy efficiency improvement loan Seastreak made the decision to remove one ferry from service and refit it from a quadruple engine/water jet vessel to a twin engine twin screw Servogear CPP propulsion system.
In addition, the owner decided to power the vessel with a pair of MTU 16V4000M53 diesel engines rated 1840 kW each. In looking at the vessel’s operational profile, Servogear’s controllable pitch propellers, tunnel design and rudders promised a significant fuel saving at the vessel’s 32 knot operating speed. With Incat Crowther providing a comprehensive design service, preparing detailed drawings and documentation including revised Coast Guard submissions, the contract to perform the work was awarded to Midship Marine in Louisiana. The engine re-powering entailed a re-configuration of the vessel’s aft. The topsides and the undersides of the hulls were removed from the waterline down, from the forward engine room bulkhead aft. New engine beds, longitudinal stiffeners and plating were fabricated to support the MTU-engines and ZF-gearboxes. Servogear designed tunnels lower hull resistance and provide optimal inflow of water to Servogear’s propellers and rudders.
Together with interior and exterior modifications, Wall Street today is 15 tonnes lighter than when originally built.
At sea trials the vessel recorded speeds of 36 knots, and at equivalent deadweights, this represents a reduction in top speed of three knots, despite a significant reduction in power. When the increased passenger capacity is considered, the refit means that per-passenger CO2 emissions are halved.

The Servogear Ecoflow Propulsor
Servogear is a Norwegian company, and like many of its brethren, it was born in the early 1970s to serve a large, dynamic and technically stressed fishing fleet around Norway. Established in 1973 in Rubbestadneset, Norway, today the company serves a diverse customer base globally, from fast ferries to offshore service vessels to workboats and yachts. It employs 48 and to date has delivered more than 1500 gears and propulsion systems worldwide. The Servogear Ecoflow Propulsor concept is highlighted by a variable pitch propeller in a unique propeller tunnel. The entire system is inclusive of: a special effect rudder; shaft and support brackets; reduction gearboxes, and stern tubes.

  (As published in the November 2013 edition of Maritime Reporter & Engineering News - www.marinelink.com)

  • Servogear propeller bracket & propeller

    Servogear propeller bracket & propeller

Maritime Reporter August 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Ship Repair & Conversion

Exhaust Gas Scrubber Guide Updated

An updated version of the “Exhaust Gas Cleaning Systems Selection Guide” is now available, the U.S. Maritime Administration (MARAD) announced today.   Developed

Oman Drydock Company Expands Rapidly

Oman Drydock Company (ODC) is growing fast. In January, the yard hit an important milestone - its 300th drydocking. Harnessing the power of its new $1.8 billion, 1.

NASSCO Invests in Facilities, Equipment and People

General Dynamics NASSCO has invested several hundred million in capital projects as part of its efforts to increase efficiencies via  modular shipbuilding, including:

Offshore

HHI Orders Regasification Systems from Wärtsilä

South Korean shipyard Hyundai Heavy Industries (HHI) has ordered two seawater/propane based regasification modules from Wärtsilä. The systems are to be installed

Hitachi Gas Supply System Order for MHI

Mitsubishi Heavy Industries, Ltd. (MHI) has received an order from Hitachi Zosen Corporation for a high-pressure gas supply system enabling use of natural gas as fuel in marine engines.

Obama Defends Arctic Oil Drilling

United States' President Barack Obama defends his decision to allow Royal Dutch Shell to drill for oil in the Arctic Ocean.   He insisted that there was no contradiction

Passenger Vessels

Carnival Ramping Up in New Orleans

Carnival on track for record year from Port of New Orleans in 2015; expects to embark 3 millionth passenger post-Katrina next year   New Orleans’ number one cruise

Wärtsilä Scrubbers for Finnlines Vessels

Finnlines, a Ro-Ro and passenger vessel operator with services in the North and Baltic Seas, has contracted Wärtsilä to supply three vessels with exhaust cleaning scrubber systems.

MN 100: Blount Boats, Inc.

The Company: Over time, the Blount shipyard has built 363 vessels, including such iconic designs as the 130-foot, 600-passenger Miss Liberty. Built in 1952, the

Marine Power

HMAS Canberra Initial Operational Capability

The Royal Australian Navy’s Amphibious Ship, HMAS Canberra, has completed a graduated operational test and trials program to achieve a key milestone towards Initial Operating Capability.

Hitachi Gas Supply System Order for MHI

Mitsubishi Heavy Industries, Ltd. (MHI) has received an order from Hitachi Zosen Corporation for a high-pressure gas supply system enabling use of natural gas as fuel in marine engines.

Exhaust Gas Scrubber Guide Updated

An updated version of the “Exhaust Gas Cleaning Systems Selection Guide” is now available, the U.S. Maritime Administration (MARAD) announced today.   Developed

Marine Equipment

BIMCO Outlines LIS Week Schedule

BIMCO’s breakfast brief, titled “The Future Of Maritime Security” is aimed at CEOs and Directors who will have an opportunity to hear more on the latest threats

HHI Orders Regasification Systems from Wärtsilä

South Korean shipyard Hyundai Heavy Industries (HHI) has ordered two seawater/propane based regasification modules from Wärtsilä. The systems are to be installed

HMAS Canberra Initial Operational Capability

The Royal Australian Navy’s Amphibious Ship, HMAS Canberra, has completed a graduated operational test and trials program to achieve a key milestone towards Initial Operating Capability.

Vessels

BIMCO Outlines LIS Week Schedule

BIMCO’s breakfast brief, titled “The Future Of Maritime Security” is aimed at CEOs and Directors who will have an opportunity to hear more on the latest threats

CMA CGM 2Q Post Higher Profit

In the second quarter, CMA CGM demonstrated the strength of its business model by significantly outperforming the market, despite a sharp fall in freight rates

HHI Orders Regasification Systems from Wärtsilä

South Korean shipyard Hyundai Heavy Industries (HHI) has ordered two seawater/propane based regasification modules from Wärtsilä. The systems are to be installed

Ferries

Wärtsilä Scrubbers for Finnlines Vessels

Finnlines, a Ro-Ro and passenger vessel operator with services in the North and Baltic Seas, has contracted Wärtsilä to supply three vessels with exhaust cleaning scrubber systems.

MN 100: Blount Boats, Inc.

The Company: Over time, the Blount shipyard has built 363 vessels, including such iconic designs as the 130-foot, 600-passenger Miss Liberty. Built in 1952, the

USCG Plans to Up Passenger Boat Enforcement

Coast Guard to step up enforcement of passenger boats along Florida’s coast, reminds passengers to “Ask the Captain”   The U.S. Coast Guard and partner agencies

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Maritime Standards Offshore Oil Pod Propulsion Salvage Ship Repair Ship Simulators Winch
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.3181 sec (3 req/sec)