Sea-Dog Line Offset & Shortside Hinges

Sea-Dog Line Offset & Shortside Hinges: Purpose-Built Marine Hardware

When it comes to dependable hardware for boat doors, hatches, and storage compartments, Sea-Dog Line has earned the trust of boatbuilders and marine enthusiasts for over a century. Within their broad hardware catalog, their offset and shortside hinges represent a focused engineering solution to one of the most common challenges aboard a vessel: mounting a door flush and cleanly onto a raised frame or cabinet face.

What Makes Offset & Shortside Hinges Different?

Unlike standard butt hinges, offset and shortside hinges feature an intentional asymmetry between the two leaves — one side is shorter than the other — allowing the hinge to bridge the lip of a raised door frame. The offset built into the barrel shifts the pivot point away from the mounting surface, so the door swings clear without binding against the surrounding structure. This geometry is indispensable on boats where cabinetry, locker doors, and hatches often sit proud of their frames.

These hinges are designed to be mounted on the front surface of a raised door , making them a natural fit for the kinds of locker doors, instrument panel doors, and below-deck cabinet faces found throughout a vessel's interior and exterior. Installation relies on five #8 flat head fasteners , keeping the profile clean and secure without requiring oversized hardware.

Materials Engineered for the Sea

Sea-Dog Line produces their offset and shortside hinges in both 316 stainless steel and 304 stainless steel variants, giving boaters the ability to match the alloy to the demands of their environment. Grade 316 offers superior chloride resistance for offshore and high-salinity applications, while 304 is a cost-effective choice for freshwater and protected coastal use. Sea-Dog Line hinges are typically made from polished stainless steel for maximum corrosion resistance, ensuring durability on boat doors, hatches, and lockers.

Size Options to Fit Any Application

Sea-Dog Line's offset and shortside hinge lineup spans multiple size configurations to suit a wide range of door dimensions and load requirements. Stainless steel shortside offset hinges are available in 2-1/2" and 2-3/4" sizes, offered under model numbers 201570 and 201572. For applications requiring a more compact form factor, the 2-1/8" offset shortside hinge (model 205350) is available in 316 stainless steel. All models are sold by the pair , making it straightforward to spec out a complete installation.

A Brand with Deep Marine Roots

With more than a century of boating-industry experience, Sea-Dog designs durable gear for recreational and commercial boaters. The Sea-Dog Line is celebrating over 100 years as a supplier of quality marine parts for retail and OEM customers, stocking more than 8 million parts in their 75,000 square-foot warehouse in Washington state. That depth of inventory and institutional knowledge translates directly into consistent quality and availability across their hinge lineup.

Sea-Dog Line offers a full line of marine hardware and accessories in stainless steel, brass, bronze, chrome plate, galvanized, and injection-molded plastic — meaning their offset and shortside hinges sit within a broader ecosystem of compatible hardware for any complete build or refit project.

Whether you're refitting a cabin door, rebuilding a locker, or replacing worn hinges on a liveaboard, Sea-Dog Line's offset and shortside hinges deliver the precise fit and corrosion resistance that demanding marine environments require. Browse the full selection of Sea-Dog Line offset & shortside hinges to find the right size and alloy for your project.