The Canadian Arctic Offshore Patrol Ship (AOPS) Design AWS

The Canadian Arctic Offshore Patrol Ship (AOPS) Design

Joint SNAME CIMarE Technical Meeting February 18, 2012 Dan McGreer Principal Engineer

Tony Vollmers Project Engineer © HER MAJESTY THE QUEEN IN RIGHT OF CANADA (2012)

Overview Company Background Primary Ship Requirements Procurement Process Principal Particulars General Arrangement Propulsion System Boats and Cargo Handling Aviation Facilities

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STX Marine Inc.

STX Canada Marine Inc. and STX US Marine Inc. are wholly owned subsidiaries of STX Offshore and Shipbuilding Korea with offices located in: Vancouver, British Columbia, - Main technical office, 45 staff Ottawa, Ontario, - Government projects, 3 staff Houston, Texas, - Offshore Vessel projects, 15 staff

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STX Marine

42 Vessels currently contracted for or under construction 8 are OPVs including 2 with LNG as fuel

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AOPS Primary Ship Requirements Designed to Class Society and Commercial Ship Standards Break up to 1m of Level Ice (IACS Polar Class 5) Open Water Speed of 17 knots Good Seakeeping for Offshore Patrol Missions Limited Command Management System Gun Armament for Sovereignty Enforcement Accommodations for 85 personnel; 45 crew and 40 supernumeraries Support Landing Craft and Boarding Boat Operations Aviation Facilities for Commercial and Military Helicopters Cargo Handling; 5 TEU containers Full Propulsion Redundancy

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Procurement History DELMS Contract - BMT Fleet Technology/STX Canada Marine - May 2008 • Developed System Requirements Document (SRD) • Developed SOW and RFP for Project Implementation (PI) and In Service Support (ISS). • Developed Definition Design to validate SRD • Developed Contract Design – Appraised by Lloyd’s Register First Project in NSPS Combat Ship Work Package Combat Work Package awarded to Halifax Shipyard under NSPS – Oct 2011 DELMS Team to Provide Engineering Support to the Government during Construction.

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Principal Particulars

LOA

98.0 m

LWL

91.0 m

LBP

86.4 m

BOA

19.0 m

BWL

18.4 m

T

5.75 m

Displacement

5874 tonnes

Installed Power (Gensets)

4 x 3300 kW

(Propulsion Motors)

2 x 4500 kW

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Hull Form Designed to have a strong balance of capabilities between icebreaking, seakeeping, manoeuvrability, and powering performance

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Hull Form Optimization using Computational Fluid Dynamics

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Model Tests at NRC Institute of Offshore Technology (IOT)

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Ice Model Tests

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Powering Performance Estimate Powering Predictions - CFD vs Model Tests Powering Predictions - CFD vs Model Tests

0

2 0

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4 2

6 4

8

6

10 12 8 10 12 Speed [knots] Speed [knots] CFD Results Model Test Results CFD Results Model Test Results

14

16 14

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18 16

18

Wake Adapted Propeller Design

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Seakeeping Potentially challenging due to combined performance requirements in open water and ice Analyzed with ShipMo PC, ShipMo 3D and recent model tests Retractable active fin stabilisers Evaluated against NATO STANAG 4154 Seakeeping requirements were evaluated at Sea State 6 for transit, fuelling, and boat launch and recovery; Sea State 5 for boarding operations; and Sea State 3 for helicopter operations Seakeeping requirements were found to be feasible with limited slamming, wetness, and motion induced interruptions, no propeller emergence, and no operational restrictions.

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General Arrangement

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General Arrangement

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General Arrangement

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General Arrangement

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General Arrangement

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Boats and Cargo Handling The AOPS is equipped with a flexible cargo deck aft that can be used to stow containers or a landing craft. A 20 tonne crane is used for cargo handling

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Boats and Cargo Handling The AOPS is equipped with two rescue/boarding boats that can be launched and recovered in SS 5. The ship has telescoping davits that can launch an RCMP RHIB or a lifeboat in the Arctic

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Aviation Facilities

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Aviation Facilities The AOPS is equipped with aviation facilities to support: • Landing, stowing, refueling, and minor maintenance of a Bell 212 or 412 • Landing, stowing, refueling, and minor maintenance of a CH148 Cyclone • Landing and refueling of a CH149 Cormorant The AOPS has a flight deck, fixed hangar, flight deck fire fighting capabilities, and night / limited visibility flight control capabilities. Flight operations are up to Sea State 3.

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CFD – Air Turbulence Calculations Velocity contours at 19m elevation (rotor plane) for wind at 15 deg off bow

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Combat and Navigation Systems AOPS is a naval ship but is not considered a combatant. The Multipurpose Operations room will not be continually manned when ship is at sea. The AOPS has a small caliber gun for sovereignty enforcement, two machine guns, and weapons lockers. Use of Commercial Off The Shelf Equipment to be maximized. Design to promote efficient use of limited manpower resources. Software development to be minimized. Multi-function workstations to be utilized. Communications System to be integrated with LAN.

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Propulsion System AC-AC Diesel-electric Twin Screw Propulsion System • 3.8m prop dia, 1m hub, bolt on blades. • 400mm shaft, 450mm propeller shaft – PC5. 4500 kW per Shaft • Motors are capable of 150% over torque during ice breaking/interactions 4 x 3300 kW diesel gensets; IMO Tier 3 with SCR • Although some benefits with father/son configuration; commonality of components for support won out • Many engines in this power range PMSR* Propulsion System Redundancy • Each shaft line is completely segregated for fire/flood risks

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Support Systems – Cold Temperature Protection Machinery and personnel support systems were developed with Winterization rules and the need to withstand -29°C Tank heating, trace heating, reduced ventilation in extreme cold. Extensive use of recovered heat from engine cooling circuits and exhaust recovery boiler for HVAC and tank heating. Covered mooring flat with blast heaters sized to de-ice the deck above. Machinery space ventilation heat recovery. Deck de-icing to meet Winterization requirements. 24/02/2012 | Page 27

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Machinery Arrangement

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Conclusion The AOPS will be a flexible platform for sovereignty enforcement and patrol in the Arctic, Pacific and Atlantic Oceans.

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Questions?

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