Manson Construction Builds Pacific Northwest's Heftiest Floating Crane
Wotan, a 600-ton lift crane mounted on a 300-foot-long barge (shown above) went into service on Puget Sound in mid-June. The floating crane, largest in use in the Pacific Northwest and one of the largest on the West Coast, was christened in June at the headquarters of Manson Construction & Engineering Company in Seattle.
The christening cermony started when a helicopter flew Henry Simonson, Seattle Port Commission president and Manson Corporate treasurer Tamara Amundsen, to the Wotan's aft helicopter pad. Mr.
Simonson was the principal speaker and Ms. Amundsen christened the vessel.
The ceremonies marked a golden anniversary for the 79-year-old company. It was in 1934 that the company acquired its first revolving, floating crane, according to Peter S. Haug, company president.
The Wotan is the 14th floating crane in the company's modern fleet.
The Wotan is rivaled in size on the West Coast only by the Betty L, a floating crane being operated by the Ocean Beach Outfall Constructors in San Francisco, a joint venture of which Manson is also a partner.
Manson purchased the 300 by 90 by 20-foot steel barge on which the crane is mounted in New Orleans.
The stoutly built barge will withstand a deck loading of 2,050 pounds per square inch. Capable of being submerged, the barge was sunk in New Orleans to load a crane barge; then, when refloated, the barges were towed to Seattle via the Panama Canal. In Seattle, Manson extensively modified and rebuilt the Clyde Model 42 revolving crane for mounting on the Wotan.
This crane, which revolves on more than 100 wheels driven by a huge bull gear, will lift 500 tons in the full revolving mode, but will hoist 600 tons over the stern. The boom offers three lifting points— the boom is 140 feet to the heavy lift tackle; another 35 feet to the two 100-ton lift auxiliary hooks; and another 15 feet to the whip, a utility hook capable of lifting 25 tons.
The boom and hoist is handled by five winches driven by a diesel engine.
The crane is controlled by an operator from a booth on the revolving structure itself equipped with controls, lift gauges, and communications systems. The operator can talk to the deck crew, Manson headquarters over company radio, marine traffic through VHF, and the anchor winch operator atop another winch house on deck.
Unless tied to a pier or other fixed structure, the Wotan will set anchors off four corners of the barge when preparing for a lift. Two-inch wire is guided through fairleads on deck from two, Model MD-97-EL four drum anchor winches built by Skagit in Sedro Woolley. Each of the four drum sets is powered by Detroit Diesel engines through torque converters. The drums have a cable capacity of 3,500 feet of 2- inch wire.
Electrical power is provided by two diesel driven interconnected generators. A 125-kw generator is located in the anchor winch house.
Another set located in the crane winch space in the rotating crane's base tub structure, turns both a 170- kw dc generator and a 60-kw ac generator.
DC power is used to propel the electrical motors that turn the full gear to revolve the crane.
Eight to 10 people can be accommodated in staterooms aboard. A full galley is equipped with an electric range, refrigerator-freezer, and laundry facilities. The pad structure is integrated with the aft wave break.
The barge is served by a pressurized water system. Water tanks will hold 67,000 gallons while fuel is contained in fuel tanks with a 134,000 gallon capacity.
Naval architect on the Wotan project was Robert W. Long of Seattle; the structural engineer was James A. Crim of Edmonds; and Manson Superintendent Robert L.
Stevens was project coordinator.
Other stories from September 1984 issue
- Symon Appointed New Director Of Tankers At Stolt-Nielsen page: 5
- SOFEC Awarded NavSea Contract For Offshore Mooring Terminal page: 5
- Metric Constructors Win $3.3-Million Contract page: 6
- Western Gear To Build And Sell Rademakers Epicyclic Transmissions page: 6
- I MO AB Of Sweden Offers New Products Literature page: 6
- Sperry Gets $62.8-Million Navy Contract For Frigate Combat Systems Work page: 6
- New HEET Fuel Additive Saves Time And Money By Preventive Maintenance page: 6
- Fairbanks Morse Taking Major Steps To Improve All Aspects Of Customer Services Worldwide page: 7
- Two Key Appointments Announced By Halifax Industries page: 7
- A.J. McAllister Sr. page: 8
- S.S. United States To Auction Contents Prior To Total Renovation page: 8
- Imi-Tech Offers Catalog Of Insulating Products For Marine Applications page: 8
- High-Speed Ferry For Hong Kong Owner Launched At Vosper Thornycroft Yard page: 9
- Marinette Marine Lays Keel For Second Mine Countermeasure Vessel page: 9
- Maritime Innovation — Practical Approaches '84 International Symposium page: 10
- NKK Completes World's First Offshore Steel/Concrete Drilling Platform page: 12
- Manson Construction Builds Pacific Northwest's Heftiest Floating Crane page: 12
- Krupp Shipyard In Duisburg Delivers Two Harbor Tugs To Guinea page: 14
- NKK To Build Floating Offshore Production Unit For Norwegian Consortium page: 14
- Van Houten To Head New Parsons Brickershoff Marine Facilities Unit page: 14
- Lykes Gets Title XI Guarantee To Upgrade Fleet Operations page: 15
- USP&I Home Office To New York Area— Other Changes Announced page: 15
- American Marine Gets $390,000 Contract For Two Cutterhead Dredges page: 15
- MARINE SALVAGE page: 16
- Crowley Named President Of Newly Organized States Africa Line page: 18
- Simplex Gets $5.7-Million MarAd Contract To Supply Petroleum Transfer System page: 18
- General Dynamics Quincy Yard Will Build Four Containerships For USL At Cost of $341 Million page: 18
- Scripps Institution Acquires Another Research Vessel page: 18
- RDI's Satcom I Communications System Approved By INMARSAT page: 18
- American Transport Asks Title XI On $17-Million Barge Conversion Work page: 19
- Canter Named President Of At-Sea Incineration page: 19
- Coast Guard Orders Schottel Jet Thruster page: 19
- SMM '84 International Ship, Machinery, and Marine Technology Trade Fair page: 20
- Tenn-Tom Waterway Project Nearing Early Completion page: 20
- BP And Harland And Wolff Forming Joint Venture For $145-Million SWOPS Project page: 21
- Naval Ship Maintenance & Modernization/Affordability page: 22
- The "Ultimate" Compact SSB page: 23
- IBM Appoints Marine Management Systems As Authorized Dealer page: 25
- Twin City Shipyard Lays Keel For Gulf Coast Trailing Dredge page: 26
- Pearlson Begins Construction Of World's Largest Ship Transfer System page: 26
- Screw Compressors Improve Air Conditioning Reliability page: 27
- NASSCO Receives Exxon Contract For Two Alaska-Class Tankers page: 28
- Tacoma Boat Division Gets $210,000 Contract To Build Propeller Hub Assembly page: 28
- AMMCO Licensed To Market O&K Dredging Bucket And Cutting Wheels page: 32
- Westinghouse Electric Awarded $2-Million Navy Contract For Frigate Study page: 32
- John Cave Appointed Vice President For Boland & Cornelius page: 33
- Norwegian Caribbean Acquires Royal Viking Line For $240 Million page: 33
- Marinette Marine Corporation Gets $24~Million Navy Contract To Build Six Yard Patrol Craft page: 34
- New Drydock At Halifax Shipyard Operating At Close To Capacity page: 34
- Stephens-Adamson Wins Ship Unloading System Orders Worth $12 Million page: 35
- Ice-Strengthened Ship Chartered By Navy's MSC From Central Gulf Lines page: 35
- Penn Ship Awarded Navy Contract For Overhaul And Maintenance Of Frigate page: 35
- John Deere Developing Family Of Rotary Engines page: 35
- Unique High-Speed Catamaran Delivered By Nichols Brothers page: 36
- Specialized Support Vessel 'Anfitrite' Acquired By O.D.S. Italia S.P.A. page: 36
- Moss Point Awarded $3.6-Million To Build 15 Barges For U.S. Navy page: 36
- WEST GERMAN SHIPBUILDING page: 38
- CORE Canadian Offshore Resources Exposition page: 38
- Meyer Named Assistant Vice President-River Area Of National Marine Service page: 43
- New Harbor Navigation System Designed To Increase Operating Revenue And Safety page: 44
- Murdock And Hunt/Leslie Use Computer To Design 'Compliant' TLP Coupling page: 45
- Samsung Wins $45-Million Contract To Build Huge Bulker For Australian Firm page: 46
- WABCO Fluid Power Adopts Worldwide Sales And Marketing Strategy page: 46
- $79-Million Coast Guard Contract Awarded to Bollinger Shipyard page: 46
- New Busiship™ System Brochure Available From Nav-Com page: 46
- Rose Named Vice President Of Mechanical Equipment's Marine Products Group page: 47
- MSC Forms New Unit To Oversee Operations Of Fast Sealift Ships page: 47
- Independent Tests Show Drew Ameroid's Amergize® Cuts Fuel Consumption page: 47
- Sulzer RTA Engines Will Power Two Containerships Building In Germany page: 48
- MonArk Delivers Fire Boat To Memphis Fire Department page: 48
- Penn Ship Provides Emergency Repairs For Two Foreign Ships page: 48
- Smith Berger Marine Names Two East Coast Distributors page: 48
- Sperry Opens New Facility In Panama City Beach, Fla. page: 51
- AMPS Appointed As Service Facility For MaK Diesels page: 52
- Halifax Shipyard Completes Major Damage Repair Contract page: 52
- Big Towing/Supply Vessel Launched At Moss Point Marine page: 52
- Serck Evaporators Installed In USSR Fish Factory Ships page: 53
- Third USN Rescue/Salvage Ship Launched At Peterson Builders page: 54
- USS Seamless Pressure Vessels Detailed In New Catalog page: 57
- ASRY Completes $3-Mlllion Overhaul Of Mobile Offshore Jackup Drilling Rig Dana page: 57
- Todd Awarded $10-Million In Contracts By Australia For Technology Transfer page: 58
- First Oceangoing Sail-Assisted Bulker Delivered By NKK page: 63