jos van doorn, marin
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Introduction of MARIN and some examples of nautical research
Jos van Doorn
HSB workshop 15-02-2012
CONTENTS
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1. Introduction MARIN
2. Introduction MARIN’s nautical centre MSCN
3. Example: Barrow exit manoeuvre
MARITIME RESEARCH INSTITUTE NETHERLANDS
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Independent and innovative service provider for the maritime sector in hydrodynamic and nautical research
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FACTS
• Located in Wageningen, Ede and Houston • Agents in Spain and Brasil • Joint Venture in China
• 300 employees • Foundation • Non-profit • Since 1932
• 9200 models • 7100 propellors
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DUAL MISSION
• To provide industry with innovative design solutions • To carry out advanced consultancy and research for the benefit
of the maritime sector as a whole
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ACTIVITIES
Simulations Model testing
Full scale Training
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FACILITIES
• Offshore Basin • Seakeeping and Manoeuvring Basin • Depressurised Wave Basin • Deep Water Towing Tank • Shallow Water Basin • High Speed Basin • Cavitation Tunnel • Full Mission Simulators • Tug Stations • Vessel Traffic Simulator • Full Scale Systems • Numerical Tools
MARIN facilities
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FACILITIES
• L x B 45 x 36 m • D 0 – 10.5 m • Movable floor • 20 m pit, 5 m diam. • X – Y carriage • Rotating arm • 6 layer current • Multi directional wave capability • Active reflection compensation • Hs = 0.35 m • Wind frame 24 m wide
Offshore basin
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FACILITIES
• L x B x D 170 x 40 x 5 m • X – Y carriage • 6 m/s, 4 m/s • Rotating arm • Captive / free sailing • 2 sides beaches • 2 sides wave flaps (331 flaps) • Multi directional waves • Active reflection compensation • Hs = 0.45 m
Seakeeping & Manoeuvring Basin
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FACILITIES
• L x B x D 240 x 18 x 8 m • 25 mbar (2500 Pa) • Resistance / propulsion • Cavitation observation / pressure
fluctuations
• 2 sides beaches, 2 sides wave flaps (224 flaps)
• Active reflection compensation
• Silent cariage / hydrophones for propeller noise measurement
• Hs = 0.45 / 0.75 m
Depressurised Wave Basin
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ORGANISATION
Management
Personnel
Finance
Quality Assurance
Communications
R&D
Research Development
MSG Simulators Software
Production Facilities
Basins
Offshore Services
T&M Full-scale Services
MSCN Nautical Services
Ships Services
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TURNOVER 2010
Turnover € 40 mln.
• Commercial service • Joint Industry Project (JIP) • Knowledge development (research)
Mission funding Market 74% 3% 15% 8% ___________ 11% 89%
Dutch public
Dutch privat
Europe
North Amerika
Asia
Rest
Regional turnover segmentation 2010
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CLIENTS
Heavy transport Yachts Tugs
Offshore production Cruise industry Ports/container vessels
LNG carrier/terminal Ferries Navies
FLNGFLNG
EXAMPLE: TUG EFFICIENCY IN WAVES
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EXAMPLE: SUBMARINE
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EXAMPLE: RENEWABLE ENERGY
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MARIN’S NAUTICAL CENTRE MSCN
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“Nautical safety and efficiency”
• Ship manoeuvring studies
- Evaluating new vessels for existing ports
- Evaluating new port lay-out, Approach channels
- Determination of operation envelope (limiting conditions)
• Risk studies
• Ship handling Training
• VTS Training
FACILITIES NAUTICAL CENTRE MSCN
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Ship manoeuvring simulators
FACILITIES NAUTICAL CENTRE MSCN
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Fast time simulations, Risk studies, VTS simulator
EXAMPLE: BARROW EXIT MANOEUVRE
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Nuclear submarines:
Built by BAE (former Vickers) in Barrow-in-Furness
LOCATION
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HISTORY (TRIDENT/VANGUARD)
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Barrow: access channel for the Trident class submarine
(1990 – 1999, with Delft Hydraulics) Contents:
• Channel design (1990 -1991)
• Training (1992 – 1999)
Plymouth: training for manoeuvres in and out of Plymouth
• Training (2005 – ongoing)
STUDIES EXECUTED FOR ASTUTE 2004/2005
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Part I: Shallow water model tests and computations for Astute (MARIN)
Part II: Channel Verification Study (MARIN/DELFT HYDRAULICS)
Task 1: Evaluation of existing situation
Task 2: Field measurements
Task 3: Flow and wave modeling
Task 4: Channel width study
Task 5: Channel depth
Task 6: Confirmation of design and procedures
PART I: MANOEUVRING CHARACTERISTICS OF ASTUTE
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Objective
Getting a robust and reliable description of the manoeuvring characteristics of Astute at the ‘Barrow trim’ in shallow water.
Investigation of relevant hydrodynamic behaviour.
Creation of mathematical simulation model for the studies in part 2
Note: Vanguard: 150 meters Astute: 100 meters
PART I: SCOPE OF WORK
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• Model manufacture
• Free sailing tests
Squat, zigzag tests
• Tests in waves in shallow water (head&beam)
• Calculations in waves (Diffrac)
• Bank suction model tests and calculations
• PMM tests
• Set-up of mathematical model
• Turning circle tests (to verify mathematical model)
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MODEL MANUFACTURE
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MODEL TEST
BANK SUCTION
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BANK SUCTION AT 15 METERS
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BANK SUCTION AT 20 METERS
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BANKSUCTION AT 30 METERS
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BANK SUCTION MODEL TESTS
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Model
Under water bank
TYPICAL STEERING BEHAVIOUR
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BEHAVIOUR IN WAVES
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Model tests were performed in:
• Head waves at 8 knots
• Beam waves at 0 knots
These results are used to tune DBSNELH calculations for all wave directions.
Results:
• Used for UKC study
• Used for bridge simulations
RESULT
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A complete and reliable mathematical manoeuvring model that includes the typical steering characteristics of Astute
PART II: CHANNEL VERIFICATION STUDY
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Task 4: Channel width study
1. Fast time simulations (comparison Vanguard 150 m and Astute 100m)
2. Real time simulations
Fast time simulation
Condition Tide
HW Vw Dir Hs Dir Vanguard M8412
[m] [m/s] [-] [m] [-]
1 8.55 4 W 0.75 W 1A-C 11A-C
2 8.55 10 W 1.75 W 2A-C 12A-C
3 9.3 4 W 0.75 W 3A-C 13A-C
4 9.3 10 W 1.75 W 4A-C 14A-C
Wind Waves Figures
CRITICAL STRETCHES
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• Dock entrance
• Piel bend
• Haws Point
FAST TIME: DEPARTURE FROM THE DOCK
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Vanguard 9.3 m tide (Env. B) M8412
PIEL BEND (9.3 M TIDE, ENV. B)
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Vanguard M8412
PIEL BEND (9.3 M TIDE, ENV. B)
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Vanguard
M8412
CONCLUSIONS FAST-TIME SIMULATIONS
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Controllability:
• Effect of typical steering behavior clearly visible
Can a pilot cope with this?
• Rudder use comparable to Vanguard (lower ship speeds!)
Exit of the dock:
• Easier compared to Vanguard (Is higher tide possible?)
Channel width used:
• Comparable to Vanguard
REAL TIME SIMULATIONS
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3 locations:
1. FMBI: Fin
2. FMBII: Control room
3. 4 tertiary bridges: Tugs
ELECTRONIC POSITIONING SYSTEM
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EXAMPLE OF VISUALS
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ENVIRONMENTAL CONDITIONS
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Environmental data provided by Deltares
• Tide: 8.5 and 9.3 m
• Current (time dependent)
• Waves: 0.75, 1.75 and 2 meters (S and SW)
Tidal curves
4.000
4.500
5.000
5.500
6.000
6.500
7.000
7.500
8.000
8.500
9.000
9.500
10.000
09:00 09:30 10:00 10:30 11:00 11:30 12:00 12:30 13:00 13:30 14:00 14:30 15:00 15:30
Time [hrs]
Wa
terl
ev
el +
CD
[m
]
HW = 8.5 m
HW = 9.3 m
Western
waves
South
Western
waves
STRATEGY LEAVING THE DOCK
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4 Tugs alongside
NORMAL SIMULATIONS
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Critical manoeuvres:
• Dock exit
• Piel bend passage
• Haws Point passage
Analyses:
• Discussion of individual runs
• Analyses of combined runs
• Controllability (criteria!)
• Channel width used (Swept Path, criteria!)
EXAMPLE OF A MANOEUVRE
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Out
er C
hann
el
Walney Channel
Piel
Haws Point
DOCK ENTRANCE
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Analyses of individual runs
SWEPT PATH: ASTUTE + TUGS
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8.5 m tide 9.3 m tide
SWEPT PATH ASTUTE
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Piel Bend 9.3 m tide Haws Point
CONCLUSIONS
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• Most critical passage is Piel bend (safety limits are exceeded)
• Vessel always well within the channel: width is sufficient
• Timing is very important (support from Electronic Positioning system)
• Steering characteristic: can be coped with
• Learning effect (training) visible
EMERGENCY SIMULATIONS
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Rudder failure Manoeuvre back into the dock
Engine failure
QUESTIONS ?
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Question to HSB members
QUESTION FOR HSB
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For a project we are executing we are looking for the following information:
The procedure to analyze multi-beam data for the development of nautical charts
1. Verification of data and elimination of wrong data
2. Procedures from these data => nautical chart
International standards?
Examples from other various countries
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