Presentation on theme: "Totem O cean T railer E xpress Fleet Renewal…the “Orca Class” Ro/Ro Vessel."— Presentation transcript:
Totem O cean T railer E xpress Fleet Renewal…the “Orca Class” Ro/Ro Vessel
CMSP Padilla Towing CMSP MERCORSUR SHUTTTLE American Shipping Group, Inc. Northwest Real Estate & Marinas Regional Petroleum Products
TOTE Company History 4 Founded in 1975 by Sun Company 4 SS Great Land maiden voyage September 1975 4 May 1976 TOTE adds second vessel for two sailings per week 4 TOTE acquired by Saltchuk in 1982 4 July 1991 SS Northern Lights purchased and modified 4 Contract with NASSCO for two Orca Class Ro/Ro vessels December 1999 4 April 2003-Midnight Sun delivered 4 August 2003-North Star delivered
TOTE Alaska Operations 4 Niche Ro/Ro liner service characterized by: Fast 24 kt ship 66 hour transit High cargo productivity 10 hour turnaround Flexibility loading - all equipment types Vehicles 4 98% average on-time record over 5 years 4 Highway and rail connections throughout greater Alaska and Lower 48/Canada These are recognized as key requirements of any successful Short Sea Service
Alaska Transportation Challenges 4 South Central Alaska’s freight arrives by: Liner Vessel - 67% Barge - 26% Overland - 7% 4 1,450 nautical miles one way (Tacoma-Anchorage) Wind gust to 100 knots Seas to 60’ 4 Cook Inlet Ice-choked 5 months of year 6 to 7 knot tidal current 35’ tidal range
Ships are usually designed for multi-trade or world-wide service
The following conditions differ from area to area: 4 4 Sea Conditions 4 4 Ambient Temperatures 4 4 Environmental Aspects Ice Shallow/Deep Waters Open Fetch Harbor of refuge 4 4 Design is therefore a compromise trying to satisfy as many conditions as possible.
However, TOTE’s Ponce class vessels were designed for the U.S. East Coast to Puerto Rico trade a relatively benign weather trade.
4 The sea spectra for the Gulf of Alaska have been intensely researched by oil companies who operate tankers to Valdez, Alaska and that spectra was made available to TOTE. 4 We also have 25 years of operating experience in this run. 4 Seakeeping model tests involve many scaling factors and thus may, or may not, represent what actually happens in full scale. 4 TOTE therefore paid an additional cost to test the existing ships in the same: Model Tank Model Scale Sea Spectra 4 As the new ship would be tested.
Vessel Comparison Orca Ponce Orca Ponce Length839 feet790 feet Beam118 feet105 feet Speed24 knots24 knots PropulsionDiesel ElectricSteam Turbine Cargo550 trailers +385 trailers + 300 autos110 autos Internal Ramps 12 5 In the above configuration the Orca can load 120 - 53’ trailers while the Ponce can load 7
New Vessel Service Features 4 Diesel-Electric System Attributes Better Able to Maintain Service Speeds in Heavy Weather Better Able to Maintain Service Speeds in Heavy Weather Smaller Engine Package Improves Payload Area Smaller Engine Package Improves Payload Area Ease of Maintenance Ease of Maintenance 4 Seakeeping Characteristics Unusually Large Freeboard Unusually Large Freeboard Whaleback Forecastle to Shed Seas Whaleback Forecastle to Shed Seas 4 Enhanced Cargo Handling Systems Multiple Internal Ramps Multiple Internal Ramps Broader Beam Broader Beam Reduced Stanchions Reduced Stanchions Fewer Bulkheads Fewer Bulkheads 4 Internal Fuel Tank 4 Ice Bands 4 Fresh Water Ballast
Orca Class Vessel Redundancies 4 4 Main Engines 4 2 Auxiliary Generators 4 2 Electric Motors 4 Dual Rudders 4 Twin Propellers 4 3 Collision Avoidance Radars
The ship is fitted six generators and two propulsion motors. 4 4 With all necessary auxiliary loads the following speeds can be achieved. 1 Main Generator 12 knots 2 Main Generators 19.5 knots 3 Main Generators 22.5 knots 4 Main Generators 24.6 knots 4 + 2 Auxiliary 25.3 knots 4 4 Even with one propulsion motor out of operation a speed 16 kts can be achieved on one shaft. 6 1234 M Motors Frequency Converters Fixed Pitch Propellers 5 Auxiliaries Mains M
Speed Power Curve Main and Auxiliary Generator Powering Steps 50000 40000 30000 20000 10000 10 55 152025 26 0 Speed (Knots) 1 AUX.2 AUX. 1 MAIN 2 MAINS 3 MAINS 4 MAINS MAIN AUXILIARY Shaft Power (KW)
Ice Strengthening The new ships were designed to ice class I-C to mitigate potential hull damage.
F.O. Pollution from Grounding or Collision Location of protected fuel oil tank for Alaska Service
Fuel Oil Tankage and Overflow Configuration F.O. Storage S F.O. Storage C F.O. Storage P F.O. Settler F.O. Service Day Tank Overflow
Orca Class Vessel Components Main Diesels MAN B&W Propulsion/Alstom Automation Motor Control/Point 8 Distribution Panel Propellers/ShaftingLIPS Steel (USA)Bethlehem Lukens Steering GearCS Controls NavigationRaytheon
Environmental Design Elements 4 Double hull fuel tank protection 4 latest ballast management system 4 Extremely fuel efficient diesel-electric power plan 4 4-Cycle engines-clean burning, low emissions of sulfur oxides and nitrogen oxides 4 State-of-the-art sewage treatment plant 4 Trash disposed shore-side via licensed contractor 4 Awards: 2000 Pollution Prevention Award-Alaska Division of Environmental Conservation; 2000 States/British Columbia Oil Spill Task Force Legacy Award; 2002 USCG William M Benkert Environmental Excellence Bronze Award; 2002 Tacoma #8 Rotary Planet Earth Award