US Stealth Ship Design

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Sea Shadow

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Program History

DARPA / Navy Sponsor

• Designed & Built in 23 Months CY 83-85

• At-sea Signature Testing CY 85-86

• Reactivated & Modified CY 92-93

• Signature & Performance Testing CY 93

• Fleet Exercise CY 94

• Analysis & Applications CY 86-87 & 93-97

• Fleet & Industry Test Ops in San Diego CY 97-06

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Dimensions & Outline

Displacement 560 LT

Overall Length 164 Ft

Beam, Maximum 68 Ft

Draft 14.5 Ft

Lower Hull Dia, Max 10 Ft

Upper Hull Clearance 8 Ft

Propulsion Diesel Electric

Sea State

Operate SS-4

Survive SS-5

Range* 1000NM @ 10 Kt

Payload Capability 51 LT

* Required range; tank volume accommodates 2250 NM

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Improved Seakeeping

Q4-1010/005

0 4 8 12 16 20

WAVE PERIOD IN SECONDS HEAVE MOTION RESPONSE

CANTED STRUTS HEAVE AMPLITUDE WAVE HEIGHT 0° 15° 30° 45° STRUT CANT

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Power & Propulsion System BRIDGE CONTROL SWTCHGR SCR'S 750 KW 600V GEN DIESEL PORT STBD PROP OIL LUBE S.T. BRG FLEX COUPLING TILT PAD THRUST BRG 800 HP DC PROP MOTOR 4:1 REDUCTION GEAR COMMON BEDPLATE RESILIANT MOUNTS 600/440V XFMR

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Ship Monitoring & Control System DGDU-2 COMPUTER B COMPUTER A UPPER HULL BRIDGE RTU-4 RTU-3 FXTU-2 RTU-6 RTU-2 RTU-1 RTU-5 SWITCH GEAR RM PROPULSION/STABLIZER ROOM PASSAGE CANARD RM

LOWER HULL (PORT)

LOWER HULL (STBD) DGDU-1 DGDU-1 FXTU-3 FXTU-1 DIESEL GENERATOR RM DGDU-2 FXTU-4 PUMP RM

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Distributed Computing Demonstration CONTROL FINS ETHERN ET PROP MOTORS E NGI N EE RI N G & A LA R MS SY S E LEM EN TS FU E L X FER & B A LLA ST SY S E LEM EN TS FU E L X FER TE R M U N IT S ( FXT Us) R EM OTE TE RM U N ITS (R TU s) A CMPTR PAN EL IN DICATORS & SWITCHES NAV CMPTR MC CMPTR INU TLM X C VR GP S RX NAV SENSORS HDG GRYO VERT GRYO DOPPLER S ER VO A MP R A CK HD-2 CMPTR HD-3 CMPTR MOTION CONTROL PANEL NA TU PAN EL IN DICATORS B CMPTR HD-1 CMPTR

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Hughes Mining Barge

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Modular Construction 13 15 16 14 9 10 12 8 11 5 2 1 1A 6 7 3 4

• 4 Separate Hull Module

Fabrication Facilities

• HTS Frames

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Under Golden Gate Bridge

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SCARF

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SCRIF

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SCRIF

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Crew Access from SC Island to HMB

Transit Boat Access Dock 386 Stairs and Trail

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Small Boats replaced by Helo

Small Boat Docking to side of HMB

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HMB 1 with Sea Shadow

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Arsenal Ship VLS TK TK T K TK 1.16 in 1.22 in on DWL 1.12 in at Mn Dk MIDSHIP SECTION Baseline Mn Dk 42-9" ABL 1st Platf 15-0" ABL Innerbottom 5'-0" ABL DWL 26'-6" ABL 2nd Dk 33-9" ABL 15 deg 3rd Dk 24'-9" ABL BRIDGE GTG SPACE CIC GALLEY STACK 01 02 Baseline 01 02 OUTBOARD PROFILE BOW VIEW MN DK 11.14 in 1.22 in PLAN OUTBOARD PROFILE DWL 26-6" ABL BASELINE 207 307 531 581 630 431 357 257 157 107 STATIONS IN FEET SWGR RM MTR RM STRG GR RM EMERG GEN PUMP RM CREW LIV INBOARD PROFILE PUMP RM MN DK 2nd DK 1st PLATF LOA MISSILE SHIP CONCEPT ARRGT

FULL LOAD DISPL- 20,000 LT

FUEL/BLST 10.83 in 9/13/95 COMM CTR MLRS NTACMS WEAPONS PAYLOAD VLS - 384 TUBES 2 - MLRS LAUNCHERS ¥ 144 M26 PODS STOWED (864 M77 ROCKETS) 2 - NTACMS LAUNCHERS

¥ 144 WEAPONS PODS STOWED

NTACMS ELEV ELEX MAG MLRS MAG MLRS LAUNCHER RM & READY RM (66 M26 POIDS) FUEL CREW LIV LMMS MARINE SYSTEMS A.MANNINO GTG SPACE ELEX EQUIP 3rd DK 7 ELEV VLS (64) VLS (64) BLST TK BLST TK BLST TK UNASS 57 481 32 32 32 32 VLS 32 32 32 32 32 32 32 32 VLS VLS (64) VLS (64) VLS (64) VLS (64) HELO PAD MESS DK AMR AMR OFF LIV CPO LIV UNASS STOWAGE UNASS STOWAGE GUN MAG GUN MAG GTG SPACE GTG SPACE STACK SWGR RM UNASS UNASS 394

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MK V Patrol Boat Statistics Length Overall 82 ft. Beam, maximum 17.5 ft. Draft (max. static) 5 ft.

Displacement 57+ tons in operational configuration

Speed 50 knots

Hull Design Mono hull, 5086 series aluminum

Propulsion 2 x 2285 HP MTU 12V396 TE94 engines

Propulsor 2 x KaMeWa K50S Waterjets

Fuel Capacity 2600 gallons fuel capacity

Nav System Radar, GPS, LORAN, chart plotter, fathometer, flux

gate compass

Communication s Systems

VHF-BTB, VHF-FM, UHF/VHF-FM UHF AM/FM, LOS/SATCOM, VHF-High Band, HF, UHF-handheld, data, IFF

Accommodation s

5 crew; up to 16 passengers and up to 4 CRRC + 6 outboard motors and fuel

Builder Halter Marine Inc., Gulfport, Miss.

Weapons Load 5 mounting positions for 7.62 mm machine guns or

miniguns, .50 Cal heavy machine guns, 40mm grenade launchers; improvements include 7.62mm gatling guns, twin .50 Cal, 25mm guns, STINGER Surface-to-Air Missiles

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Adm Hogg (ret)

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March 2005

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Don Young with his Team Sea Shadow Ready for Sea

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Sea Shadow 20

th

Anniversary

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HMB 1 with Sea Shadow

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Assembled by Dick Paquette [email protected]