Embed Size (px)
Citation preview
Maryland’s OSW ProjectSpecialized Vessels for Operations,
Service & Support
Pete Johnson
Amerigo Offshore LLC
Business Network for Offshore Wind
6/30/2015 [email protected]
Vessels: Overview
• Current Work and Focus– White Paper by Business Network
– MAPC project – O&M Transfer Vessels
– MAPC project – Unmanned Support Vessels
• Areas of Future Work– Analyses of transfer vessel performance
– Development of unmanned vehicle missions
– Investigation of alternative turbine/foundation installation vessels
6/30/2015 [email protected]
Service Vessels White Paper
• Need for improved harsh weather/ far offshore performance
• European experience delays and downtimes for many past operations
• R&D topics– Low-motion low-draft hulls forms
– Improved propulsion & station-keeping
– Improved transfer systems – crew & supply
• Reducing weather downtime improves economics
6/30/2015 [email protected]
Offshore Wind Operations & Maintenance 10 to 23 miles from Ocean City
Mid-AtlanticOffshore Wind
Resource
10 mi
Maryland Wind Turbine Wave Environment
Station 44009 (LLNR 168) - DELAWARE BAY 26 NM Southeast of Cape May, NJ, Owned and maintained by National Data Buoy Center, 38.461 N 74.703 W (38°27'40" N 74°42'9" W)
http://www.ndbc.noaa.gov/station_history.php?station=44009
Buoy 44009 Significant Wave HEIGHT 5/1986 – 12/2008
Sign
ific
ant
Wav
e H
eigh
t -
Met
ers
Buoy 44009
65% Access by Boat Requires Operation/Transfer in 2.0 Meter Seas During Winter
25 Meter Catamarans as Service Vessels for the Maryland OSW Farm
Mark Rice, P.E.
Maritime Applied Physics Corporation
1850 Frankfurst Ave, Baltimore, MD 21226 USA
Proven Personnel & Equipment Transfer Vessels
Damen, Netherlands Odense, Denmark
Fjellstrand, Norway BMT Nigel Gee, UK
O&M Vessel Cost ModelIncludes Labor Cost of Technicians In Transit
Cost Model Input -12 Pax O&M Boat
Ave Techs/Trip 6
Op Days Per Year 256
Initial Vessel Cost $4,500,000
Capital Recovery Per. 15 years
Simple Interest Rate 6.00%
Capital Cost per Yr $463,332
Annual Insur Cost $80,000 per year
Employee Base 2person/op-day
Average Crew Cost $28.00 per hour
Fuel Cost $3.80 per gallon
Fuel Rate 0.336lbs/hp-hr
Other Overhead Cost 70%of crew labor
Round Trip Distance 40nautical miles
Low Speed Distance 1n. mi
Var. Maint Cost 10.00%of Fuel Cost
Fixed Maint Cost $50,000 per year
Cruise Speed 25knots
Harbor Speed 6knots
Average Speed 23.17 knots
Hp / ton 48.00 hp/long-ton
Displacement 50.00 long tons
Cruise Power 2400bhp
Harbor Power 80bhp
PAX Capacity 6persons
Trips per Day 2
Tech Labor Rate $100
Labor Hrs Underway 12.432per day
Tech Wages Underway $318,259 per year
Total Cost $1,480,990 Per Year
MAPC designs & builds USVs including hydrofoils
and towing craft
MAPC Unmanned Surface Vessels
Two OSW Applications
Unmanned Worker Rescue• Unmanned vessel staged on
foundation platform• Man-overboard signal from
seawater-actuated personal locator beacon
• Wind farm operator notified, GARC dropped into sea & deployed to beacon site
• Water from engine provide hypothermia prevention
• Option for unconscious person recovery
Unmanned Surveying
• GARC equipped with side scan, seabeam sonar or towed magnetometer
• GARCs programmed to survey existing cable routes and foundation bases
• Mother vessel carries up to 6 GARC vessel, provides data center and refueling services
• Survey cost reduction of up to 75%
Future Research Topics
• Expand service vessel performance analyses
– Additional east coast locations & conditions
– Model & full scale testing
• Evaluate unmanned vehicle missions and costs
• Investigate foundation & turbine installation systems for optimum economics
– Vessels for crane transfers vs floating systems
– Economics of Jones act TIVs
6/30/2015 [email protected]
