Section J-12 HSC-L Design Placemat

UNITED STATES COAST GUARD

HOMELAND SECURITY CUTTER LIGHT (HSC-L)

DIMENSIONS

Length, Overall
Beam, Overall
Depth, To Focsle Deck
Depth, To Main Deck
Design Draft (DWL)
Full Load EOSL Draft
Air Draft - Folded
Air Draft - Unfolded

PERFORMANCE

Icebreaking @ 3 kts
Ice Breaking % MCR
Cruise Speed
Range @ 12 knots
Endurance

US

69.6 ft

21.5 ft

11.0 ft

9.0 ft

6.0 ft

6.3 ft

17.8 ft

25.6 ft

WEIGHTS

SWBS 100

SWBS 200

SWBS 300

SWBS 400

SWBS 500

SWBS 600

Lightship (LS)

Margins
Total Margin

13.3 LT

LS w/ Margin

91.6 LT

Icebreaking Load Condition
Icebreaking Loads 14.8 LT
Full Load (BOSL)
109.7 LT

SLA (7.5% LS)

7.0 LT

Full Load (EOSL)
116.7 LT

12 in

90%

10.0 kts

720 NM

3 days

ARRANGEMENTS

Crew Mess
WC w/ Shower
Deck Head
ATON Workshop

6 persons

ACCOMMODATIONS

4 person

2 person

Total

TOWING

1 x 36,500 lb RBS Tow Hawser w/ Bridle

WEIGHT

45.0 LT

7.6 LT

5.2 LT

1.8 LT

12.3 LT

9.6 LT

81.5 LT

PROPULSION SYSTEMS

Propulsion Engine
2 x CAT C18 B Rating (500 kW)
Propeller
2 x 45 in, 4 Blade, Fixed Pitch
Reduction Gear

2 x ZF W3350

Total BHP
1,340 HP

BUOY TENDING

Buoy Crane
4,500 lb SWL
Largest Buoy

5 x 11 LR

ATON Deck Load 16,340 lbs
Cross-deck Winch 2 x 2,000 lb SWL

ELECTRIC SYSTEMS

Generator
Total ekW

MATERIAL

Hull
Superstructure

AUXILIARY SYSTEMS

Firefighting
Machinery Cooling
Auxiliary Cooling

2 x CAT C4.4 (65 kW)

130 ekW

Watermist
Keel Coolers
Fresh Water Loop

Steel
Steel

DESIGN STANDARD

ABS First Year Ice Class IC (Hull Structure)

VCG

7.0 ft

4.2 ft

6.0 ft

16.8 ft

9.4 ft

9.0 ft

7.5 ft

12.1 ft

8.1 ft

7.5 ft

0.5 ft

8.0 ft

Aids To Navigation Load Condition
ATON Loads

25.7 LT

Full Load (BOSL)
120.5 LT

7.7 ft

SLA (7.5% LS)

7.0 LT

0.5 ft

Full Load (EOSL)
127.5 LT

8.2 ft

TANKAGE

Fuel Oil
Potable Water
Sewage

2,700 gal
500 gal
500 gal

6/11/2026
Distribution Statement A. Approved for public release: distribution is unlimited.