Boat doors, cabinets and access panels need different hinge constructions. Sea-Dog offers compact mortised butt hinges in stamped 304 stainless steel, an offset model for raised doors, a right-hand take-apart brass hinge and a cast 316 stainless short-side hinge. This comparison helps match the hinge to the intended mounting surface and existing opening.
Four ways these marine hinges differ
Butt hinges normally seat into recesses in the door and frame. Compare leaf length, width, thickness and mounting-hole positions before selecting a size.
201590-1 has a ⅜-inch offset on one side and mounts on the front of a raised door, not as an ordinary flat butt hinge.
204279-1 uses chrome-plated forged brass. Its right-handed, two-piece design allows a suitable door or lid to lift off without unscrewing the hinge.
205310-1 is investment-cast 316 stainless steel, with one shorter leaf for installations where the available mounting area is tight.
Sea-Dog marine hinge sizes and constructions
Use the exact Sea-Dog display MPN rather than assuming the closest-looking hinge will replace the original. Fastener sizes come from the maker's installation tables; screws are not included.
| MPN | Hinge design | Construction | Nominal size | Handing or offset | Fastener reference |
|---|---|---|---|---|---|
| 201070-1 | Butt hinge | Stamped 304 stainless steel | 1¼ × 1½ in | Not handed | Four #8 flat-head screws |
| 201080-1 | Butt hinge | Stamped 304 stainless steel | 2 × 3 in | Not handed | Six #8 flat-head screws |
| 201081-1 | Butt hinge | Stamped 304 stainless steel | 3 × 3 in | Not handed | Six #8 flat-head screws |
| 201580-1 | Butt hinge | Stamped 304 stainless steel | 1⅜ × 1½ in | Not handed | Confirm original hole pattern |
| 201582-1 | Butt hinge | Stamped 304 stainless steel | 2 × 2 in | Not handed | Confirm original hole pattern |
| 201590-1 | Offset butt hinge | Stamped 304 stainless steel | 1½ × 1½ in | ⅜-in offset | Four #8 flat-head screws |
| 204279-1 | Right take-apart | Chrome-plated forged brass | 3⅞ × 2 in | Right-hand lift-off | Four #10 flat-head screws per hinge |
| 205310-1 | Short-side door hinge | Investment-cast 316 stainless steel | 2⅜ × 1½ in | Not specified | Five #10 flat-head screws |
Cabinet, door and hatch mounting checks
Decide whether the opening requires mortised leaves, an offset for a raised door or a lift-off arrangement for occasional access. Measure mounting thickness and clearance around the knuckle. Use suitable backing and corrosion-resistant screws appropriate to the mounting surface.
201590-1 uses stamped 304 stainless steel with a ⅜-inch offset. 204279-1 is a right-hand chrome-plated brass take-apart fitting. 205310-1 is a cast 316 stainless short-side hinge. These are not interchangeable simply because they are marine-grade hardware.
For the 204279-1, confirm the right-hand lift-off direction and alignment when closed. It is supplied as the manufacturer's take-apart hinge set; hardware for surface mounting is separate.
Sea-Dog cabinet, offset and take-apart hinges
Choose the correct hinge model below to review the product listing and availability.

Sea-Dog 201070-1
Compact two-leaf butt hinge for a mortised door and jamb.
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Sea-Dog 201080-1
Two-inch-wide, three-inch-long recessed butt hinge.
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Sea-Dog 201081-1
Three-inch-square butt hinge with a larger leaf footprint.
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Sea-Dog 201580-1
Smaller 304 stainless mortised butt-hinge configuration.
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Sea-Dog 201582-1
Square 2-inch butt hinge, distinct from the 2 × 3-inch 201080-1.
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Sea-Dog 201590-1
Face-mounted hinge with a three-eighths-inch offset on one leaf.
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Sea-Dog 204279-1
Right-hand take-apart hinge pair for a removable door or lid.
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Sea-Dog 205310-1
316 stainless short-side hinge suited to limited mounting space.
View hinge details and availabilityRelated stainless marine hardware
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