© 2008 EU-MOP Consortium Integrated EU-MOP System Design Madrid, Spain 24 January 2008 Yiannis Ventikos Dept. of Engineering Science University of Oxford

© 2008 EU-MOP Consortium Specification of the EU-MOP system “A scalable number of autonomous vessels, operating in a coordinated manner, capable to combat a variety of oil-spills in a multitude of marine environments”

© 2008 EU-MOP Consortium System vs. Unit Design The EU-MOP design process has been an unusual engineering task: We have put together a system aimed at fulfilling a pre-specified task; The units comprising the system are complex devices with specifications that are part of the design effort. System Level (strategic/operational) Unit Level (technical)

© 2008 EU-MOP Consortium System Unit EU-MOP design levels Strategic

© 2008 EU-MOP Consortium Conceptual design approach Input information Oil spill characteristics –Oil types –Age –Spill dimensions quantity/volume surface area, shape –Spill distribution Environmental conditions Determine Preliminary design –Unit volume, weight –Main characteristics –Manufacture materials Power consumption Decide Most probable operating policy Action Time Number of Drones Nantes Meeting, June 2005

© 2008 EU-MOP Consortium Catamaran integrated design

© 2008 EU-MOP Consortium Strategic level

© 2008 EU-MOP Consortium Strategic level Type 2: 14 units Type 4: 2 units Units allocation for confronting spills in the south of Spain (Mediterranean)

© 2008 EU-MOP Consortium System/swarm level EU-MOP Artificial Intelligence needs to perform systems operations:  search-and-follow the slick  decide on optimal collection strategy  loading and unloading sequences, etc…

© 2008 EU-MOP Consortium Unit level Two design classes: Catamaran & Monocat Three sizes: Large – Medium – Small Large catamaran Large monocat Small EU-MOP

© 2008 EU-MOP Consortium Design of catamaran EU-MOP Main features: Autonomy24h Energy productionDiesel Generator Oil recoveryFolding belt skimmer + oil storage tank Propulsion2 x Azimuthing thrusters Trim adjustmentNo ballasts Large EU-MOP model Length 3.20 m Breadth2.30 m Fore hull clearance 0.95 m Draught0.93 m Displacement (full-load) 3563 kg Medium EU-MOP model Length 3.00 m Breadth1.88 m Fore hullclearance 0.68 m Draught0.80 m Displacement (full-load) 2582 kg

© 2008 EU-MOP Consortium MONOCAT - Large Principle characteristics LOA 3.5 m LWL3.5 m BOA2.3 m Depth1.3 m Fore hullclearance1 m Air draft3.45 m Other features: Autonomy24h Energy productionDiesel Generator Oil recoveryFolding belt skimmer + 2m3 oil tank Propulsion2 x Azimuthing thrusters Trim adjustment2x 125l water ballasts Anti capzising volume (mast) Design of monocat EU-MOP

© 2008 EU-MOP Consortium MONOCAT - Large Hydrostatics & stability (preliminary) Displ (kg)Wetted Draft (m) surf (m²) Lightship % Load % Load Hull Design features: - Allows for skimmer fitting and good oil canalization. - Provides enough volume for oil storage and equipment fitting. - Minimize drag. - Minimised change in draft with increasing loading. - Centre of volume located slightly aft for minimizing trim with increasing loading. Design of monocat EU-MOP

© 2008 EU-MOP Consortium MONOCAT - Medium Principle characteristics LOA 2.4 m LWL2.4 m BOA1.9 m Depth1.10 m Fore hull clearance0.7 m Air draft2.13 m Other features: Autonomy24h Energy productionDiesel Generator Oil recoveryFolding belt skimmer m3 oil tank Propulsion2 x Azimuthing thrusters Trim adjustment2x 90l water ballasts Anti capzising volume (mast) Design of monocat EU-MOP

© 2008 EU-MOP Consortium MONOCAT - Medium Hydrostatics & stability Displ (kg) Wetted Draft (m) surf (m²) Lightship % Load % Load Hull Design features: Parametric scaling from Large unit’s Hull with specific targets: -Length constrained by 40’ container size -Increased freeboard / Length ratio -Increased Breadth / Length ratio Design of monocat EU-MOP

© 2008 EU-MOP Consortium Design of small EU-MOP Dimensions LOA: 1.20 m - BOA: 1.10 m - Depth: 0.7 m Max speed: 3 kts - recovery speed: 0.7 kts Energy system Battery pack type: LiFePO Propulsion system 2 x fthrusters To be determined Small Unit - presentation Oil tank capacity: 0.19 m3 Skimmer type Ro Clean – DBD 5 Single bank of 10 discs – 295 mm Diameter Recovery capacity (max): 5-7 tonnes / hr

© 2008 EU-MOP Consortium Unit design: propulsion resistance EU-MOP Novel Designs  No documented resistance correlations  Accurate estimation  Towing tank model tests  Study of oil/emulsion effects  CFD simulations Speed (Knots)CatamaranMonocat Resistance (N) Eff power (W)Resistance (N) Eff power (W)

© 2008 EU-MOP Consortium Fouling and oil-layer simulations 5 cm Viscosity increase 900% Resistance increase 21.5% Estimate the resistance increase when: Navigating through floating oil film of 5 cm

© 2008 EU-MOP Consortium Unit design: energy source EU-MOPPower (kW) Selection CatamaranMonocat Large Propulsion-2xSeaEye SM7 2xDSSI 2100 (SEA MAX TH- 2100) Total-5.0 kW3.0 kW Medium Propulsion-1xKOHLER 8EOZD 2xDSSI 2100 (SEA MAX TH- 2100) Total-8 kW1.5 kW Small Propulsion1?? Total1.87??

© 2008 EU-MOP Consortium Unit design: propulsion & steering Connection to Propulsion Motor Teflon Face Sealed Thrust Race Grub Screw Bearing Retention Ring Locking Screw Steering Drive Shaft Needle Bearing

© 2008 EU-MOP Consortium Unit design: large catamaran manoeuvring Effect of Speed Effect of Loading Condition NDA: Nozzle Deflection Angle (°) Effect of Nozzle Deflection Angle

© 2008 EU-MOP Consortium Unit design: Artificial Intelligence Controls and sensors  DGPS  Obstacle detection / collision avoidance system  Depth sensor  Compass  Oil-in water sensor  Level indicators for fuel & storage tanks  Radio-based communication system  Embedded control processor/computer

© 2008 EU-MOP Consortium EU-MOP storage/logistics CatamaranMonocat ContainerLargeMediumLargeMedium 40ft ft1112

© 2008 EU-MOP Consortium Outlook and Future Challenges The EU-MOP system presents us with a series of unique features in terms of versatility, scalability, efficiency and user-friendliness. The EU-MOP project has produced a preliminary design that spans the system-to-unit range and sets the ground for further development of the concept. The ground is ripe for moving to the next stage: finalising a prototype design and running testing to demonstrate the advanced features of the EU-MOP concept.