Sterling Builds Massive Dredger

By Eric Haun
Wednesday, September 11, 2013
Deck barge Dale Pyatt sits in May Shipyard while construction is finalized. (Photo: Eric Haun)

Vessel’s crane is the centerpiece of this state-of-the-art, technologically advanced workhorse platform.

Sterling Equipment, Inc., an East Coast marine construction rental company based out of Quincy, Mass., has more than 135 pieces of floating equipment in commission, but its newest barge, a 180- x 65- x 12-foot crane dredge, will be among its largest and most technologically advanced. In September 2012, Sterling, a subsidiary of Jay Cashman, Inc., contracted May Shipyard on Staten Island, N.Y. to start construction on its new walking spud deck barge, Dale Pyatt (named after President and CEO of Jay Cashman, Inc.).
Robert “Bobby D” DeCrescenzo, president of Sterling, said the 70-cubic-yard dredge is being built to help Sterling enter a bigger market. “To compete with dredging market, we have to come up in dredge size,” DeCrescenzo said. “We’re not a 20-yard dredge company anymore. We’re a 70-cubic-yard dredge company, and we can compete with the big guys.”

Two Steps Forward; One Back
The new dredger is Sterling’s third barge to be built at May in the last year and a half, and though its construction has finally been completed, the shipbuilding crew encountered a few setbacks along the way. Last October, Superstorm Sandy brought more than six feet of water into the yard, knocking one of May’s drydocks into the ship, causing damage to the vessel. The yard was closed for at least 30 days, DeCrescenzo said, and without power, the project was kept stagnant for nearly six weeks. With help from 250-kw generators, May’s builders were able to get production back on track.

TDC Crane: Power and Features to Spare
Significantly, the crane is powered by two Caterpillar C27 tier 4 diesel generators that produce 800 eKW each, synchronized for 1,600 eKW of total power. DeCrescenzo said the vessel will feature state-of the art electronics and boasts an all-electric design, right down to the operation of the crane. With all hold-ups in rearview, Sterling has wrapped up assembly on the barge’s crane in Quincy. The crane, designed to T6 criteria by Canadian company TDC Cranes Ltd., has finally made its way onto the barge.
When engineering on the crane began in June 2012, Sterling set forth to produce a crane that was enormous, powerful and high-tech, yet still durable and simple to operate. Sterling provided continual input to TDC throughout the engineering and design process to end up with a machine that suits the end user and application. “Everything about this crane is massive, said Richard Gillespie, President of TDC Cranes Ltd., “from the draw works to the boom to the dual slew drives, carbody, a-frame, house roller beams, gear reducers, open gears and operating cab.”
“Assembly of a machine this size is a huge undertaking requiring skilled fitters, welders, millwrights and electricians,” Gillespie said. “This was undertaken by Sterling’s crew in Quincy with TDC supervision and support. Large steel fabrications were built off site, delivered to Sterling and had all the mechanical and electrical components installed by Sterling at the Quincy yard.”
The dredge crane features 200,000 pounds of line pull, 250 feet-per-minute rating, diesel-electric drives and 75-foot operating radius. It can be equipped with either a 70-yard bucket for trimming or a 30-yard bucket for heavy digging. With a crane of this size, simple operation seems hard to imagine. But, that’s where many of its high-tech features come into play. The entire crane can be operated from one seat with two joysticks. There are no pedals, no frictions, and the winches are fully powered up and down. Even the spud winches and walking spud can be controlled from the crane seat.
The list of state-of-the-art features doesn’t end there. The crane’s winch lock allows the operator to automatically coordinate the winches, auto-close, auto-open and cinch control. As the closed bucket hauls up, the closing winch adjusts itself 60 times per second to ensure the bucket remains closed even when the winch is inactive.
The house rollers, carbody and rail are unique to TDC. The roll path is a continuous, curved beam with heavy flanges and web that provide uniform, continuous support for the rail, facilitating direct transfer of loads to the structure of the barge without bending in the carbody. The rail itself is rolled in a precise curve with the ends cut on 45 degree bias to guide the house rollers transition across the rail joints.

Moving to the Head of Class
Built entirely in the United States with North American components, the newbuild work platform is ample proof that U.S. builders can get the job done and that much needed dredging capacity continues to be launched. “The result,” Gillespie said, “is a strong roll path capable of withstanding the rigors of dredging. Environmentally, the crane is state-of-the-art; it uses Tier 4 engines, double walled fuel tanks and elimination of all hydraulic equipment,” Gillespie said. “This dredge is lightyears ahead of the competition environmentally and is the only dredge in North America that is Tier 4 compliant throughout.”
Ahead of the curve environmentally and technologically, Sterling, Canadian-based TDC Cranes Ltd. and May Shipyard have beaten the odds presented by both Mother Nature and the regulatory scheme to produce a competitive and highly desirable dredge unit.


(As published in the August 2013 edition of Marine News - www.marinelink.com)

 

  • Robert “Bobby D” DeCrescenzo got his start in the maritime industry working on cranes in the late 1970s. From there, he was hired by Jay Cashman Inc. as a mechanic and worked his way up to president of Sterling Equipment. (Photo: Eric Haun)

    Robert “Bobby D” DeCrescenzo got his start in the maritime industry working on cranes in the late 1970s. From there, he was hired by Jay Cashman Inc. as a mechanic and worked his way up to president of Sterling Equipment. (Photo: Eric Haun)

  • Workers configure the crane’s mammoth Carbody in Quincy, Mass. (Photo: Sterling)

    Workers configure the crane’s mammoth Carbody in Quincy, Mass. (Photo: Sterling)

Maritime Reporter September 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Technology

Statoil: New Oil in the Grane Area

Statoil has together with PL169 partners proved new oil resources in the D-structure in the vicinity of the Grane field in the North Sea.   Well 25/8-18 S, drilled by the rig Transocean Leader,

New Standard for LNG Cargo Containment Systems

Wilhelmsen Technical Solutions (WTS) said it has successfully completing the gas trial for the first LNG carrier built to a Boil Off Rate (BOR) of 0.08% per day.

Corvus Gains Support from WINN Initiative

Corvus Energy announced today the award of $1.3 million in repayable assistance from the Western Innovation (WINN) Initiative for its project to further develop the Corvus Energy Storage System.

Shipbuilding

Offshore Oil: Lamprell Completes Caspian Sea Drilling Unit

UAE-based Lamprell said that it completed construction of the second Caspian Sea jackup drilling rig, Mercury, for service in the Caspian Sea.   "I am delighted

TRIYARDS Buys into Aluminium Shipbuilding Expertise

TRIYARDS Holdings Limited, an offshore vessel fabrication and engineering solutions provider to the oil and gas (O&G) industry, has added new capabilities, products

Mitsubishi Super Skiving System

Mitsubishi Heavy Industries, Ltd. (MHI) has completed development of the "Mitsubishi Super Skiving System" for machining internal gears with high speed and outstanding precision.

Dredging

Boskalis Consortium Wins Suez Canal Expansion Contract

A consortium consisting of Royal Boskalis Westminster N.V. (Boskalis), Van Oord, NMDC (Abu Dhabi) and Jan de Nul (Belgium) has acquired a contract from the Suez

Canada Invests $18.4m in Small Harbors

The Government of Canada invests in Newfoundland and Labrador's small craft harbors Senator Fabian Manning, on behalf of the Honorable Gail Shea, Minister of Fisheries and Oceans, announced an $18.

Video: New Channel Established on Atchafalaya River

The U.S. Coast Guard (USCG) helped establish Crewboat Cut as a new federal channel in the Atchafalaya River near Morgan City, Wednesday. The new waterway is intended to be safer for mariners,

Marine Equipment

B COOL Acquires MEMAC

With the acquisition of MEMAC, B COOL A/S now offers customers one entry to multiple maritime systems – both refrigeration solutions and monitoring of the engine

TRIYARDS Buys into Aluminium Shipbuilding Expertise

TRIYARDS Holdings Limited, an offshore vessel fabrication and engineering solutions provider to the oil and gas (O&G) industry, has added new capabilities, products

Singapore’s MPA Discuss LNG Bunkering

The Maritime and Port Authority of Singapore (MPA), Antwerp Port Authority, Port of Rotterdam and Port of Zeebrugge participated in a Liquefied Natural Gas (LNG)

Barges

Missouri River Basin is Booming

The U.S. Army Corps of Engineers Missouri River Basin Water Management Division is maintaining above normal releases at the four lower dams on the Missouri River.

Smith Brothers Chrtisten New Tug

Smith Brothers, Inc., Chesapeake Bay-based barge and marine equipment charter company, recently added the tug Capt. Kenneth to its fleet of inland and truckable tugs.

World’s 1st LNG Hybrid Barge Christened "Hummel"

The world’s first LNG hybrid barge of Becker Marine Systems was christened with the name "Hummel" on October 18, 2014, at Grasbrook Quay in HafenCity Hamburg.

Vessels

TRIYARDS Buys into Aluminium Shipbuilding Expertise

TRIYARDS Holdings Limited, an offshore vessel fabrication and engineering solutions provider to the oil and gas (O&G) industry, has added new capabilities, products

Singapore’s MPA Discuss LNG Bunkering

The Maritime and Port Authority of Singapore (MPA), Antwerp Port Authority, Port of Rotterdam and Port of Zeebrugge participated in a Liquefied Natural Gas (LNG)

New Standard for LNG Cargo Containment Systems

Wilhelmsen Technical Solutions (WTS) said it has successfully completing the gas trial for the first LNG carrier built to a Boil Off Rate (BOR) of 0.08% per day.

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Naval Architecture Navigation Pipelines Pod Propulsion Salvage Ship Repair Shipbuilding / Vessel Construction
rss | archive | history | articles | privacy | terms and conditions | 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: 0.2510 sec (4 req/sec)