1. NAVAL ANTI-SUBMARINE COMBATANT CRAFT (NASCC)
Foreign Military Sales Patrol Boat
MIDN Natalie Albertson, USN
MIDN Matthew Harmon, USN
MIDN Alexander Laun, USN
Class of 2011

2. MISSION STATEMENT
The mission of the Naval Anti-Submarine Combatant Craft (NASCC) is to provide effective anti-submarine warfare (ASW) capabilities to foreign naval surface forces. Supported by a fast and highly-maneuverable hull-form designed for year-round operations, this torpedo boat will feature an advanced SONAR suite, offensive ASW technologies, and the capacity to support small-scale maritime interdiction operations. This vessel is designed for diverse, short-endurance missions in various high-traffic littoral and coastal regions around the world and specific foreign ports.

3. DIESEL-POWERED SUBMARINE
MISSION PROFILE
Offensive ASW Operations
Defensive ASW Operations
Underwater Acoustics / SONAR Operations
Towing Operations
Small-Scale Maritime Interdiction Operations
IRANIAN KILO-CLASS
DIESEL-POWERED SUBMARINE
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4. HULL-FORM DESIGN Streamlined / Efficient Shallow Draft
Reduced Wake / Spray at High Speeds
Sufficient Seakeeping Capabilities
Minimal RADAR Return
Common Construction
Aesthetic

5. PARAMETRIC ANALYSIS
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AUSTAL
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USSOCOM

6. PRINCIPAL CHARACTERISTICS

7. (TYPICAL 36-HOUR OPERATIONS)
OPERATING PROFILE
35 KNOTS (MAXIMUM SPEED)
1000 NM (ECONOMIC TRANSIT)
THREE-DAY ENDURANCE
(TYPICAL 36-HOUR OPERATIONS)

8. EXAMPLE OPERATIONAL AREA
(SOUTH CHINA SEA)
MAXIMUM RANGE
(1000 NM)
PATROL SPRINT RANGE
(200 NM)

9. GENERAL ARRANGEMENTS (MAIN DECK) Storage / Munitions
Galley / Mess Decks
Enlisted Berthing / Enlisted Head
Fuel Storage
Machinery Spaces / Main Propulsion

10. (MAIN DECK – ENGINE ROOM)
GENERAL ARRANGEMENTS
(MAIN DECK – ENGINE ROOM)

11. (MAIN DECK – FORWARD LIVING COMPARTMENTS)
GENERAL ARRANGEMENTS
(MAIN DECK – FORWARD LIVING COMPARTMENTS)

12. GENERAL ARRANGEMENTS (COMMAND LEVEL)
Modern Bridge / Command-and-Control Center
Dedicated SONAR Suite
Torpedo Launchers / Internal Torpedo Storage

13. GENERAL ARRANGEMENTS (DECK LAYOUT) Stealth Superstructure
Enclosed RADAR System
Advanced Communications Mast
Automated Deck Gun System (Gyro-Stabilized)
Retractable Towing Frame
Versatile Working Deck

14. EHP CURVE

15. CODAG Propulsion Plant (Iterative Approach)
PROPULSION PROFILE
CODAG Propulsion Plant (Iterative Approach)
MTU S60 1DS Marine Diesel Engine (2)
1,230 kW (Total Rated Power)
328 L / h (Total Fuel Consumption Rate)
Continuous Operation (72 Hours)
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GE LM500 Marine Gas Turbine Engine (2)
8,940 kW (Total Rated Power)
2,974 L / h (Total Fuel Consumption Rate)
High Transit / Patrol Sprint (14 Hours)
“V-Drive” Configuration
Exhaust Vented Through Transom
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16. Controllable-Pitch Propeller (CPP) System
PROPELLER SELECTION
Controllable-Pitch Propeller (CPP) System
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Reduced Noise / Minimized Acoustic Signature
Minimized Reduction Gear Complexity
Greater Efficiency Through Desired Speed Range
Enhanced Fuel Savings
Expedited Reversing / Maneuvering

17. INTACT STABILITY ANALYSIS
GZMAXIMUM = Meters at 35.5°
AVS = 75.2°
Predicted DF Angle ≈ 45°

18. OTHER STABILITY CRITERIA
VALID for Beam Winds Criteria
VALID for Personnel Criteria
High-Speed Turns Limited to Less Than 25 Knots

19. COMBAT SYSTEMS Passive Towed-Array SONAR System (TASS)
MK-46 TORPEDO LAUNCHER
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Passive Towed-Array SONAR System (TASS)
Active / Passive Hull-Mounted SONAR System (Optional)
Automated Deck Gun System (Bridge-Controlled)
Dual Torpedo Launchers
Small-Arms Storage / Machine Gun Mounting Rails
Dedicated SONAR Suite / ASW Center
Mission-Planning / Command-and-Control Capabilities
Advanced C4ISR / Navigation Systems

20. FUTURE CONSIDERATIONS
Improved Hull-Form Efficiency
Reduced Acoustic Signature
Reduced RADAR / Heat Signature
Propeller Optimization
Enhanced Manufacturing / Production Efficiency
Mission Expansion (Adaptability / Modularization)
Enhanced Combat Systems
Additional Refinement via ABS Standards

21. QUESTIONS / COMMENTS ?

22. ACKNOWLEDGEMENTS REFERENCES
Professor Paul Miller
Mr. Paul Cojeen
CDR Patrick Hudson, USN
Mr. John Zseleczky
Mr. Charlie Weil
Mr. Dean Schleicher
Mr. Tom Price
REFERENCES
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[ 4 ] hp-electronic-fuel-injection-turbocharged jpg
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[ 6 ] res images/Sept/lpd_porpeller.jpg
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