15" x 23" 2-Dog Raised Bolt Hatch with Stainless Steel Hardware (Model #DB774-5-1523A) - Painted Steel

The Model DB774-5-1523A features the same heavy-duty painted steel cover plate and 5" raised coaming as our standard model, but upgrades the critical locking hardware to high-grade stainless steel. By replacing standard mechanical hardware with stainless steel dogs, this model eliminates the risk of rust-binding or frozen fasteners on exposed, salt-sprayed decks. This ensures that the hatch levers can always be quickly and smoothly actuated by hand for routine safety checks or washdowns.

Intended Use Cases:

• Frequent-Access Voids & Lockers: Engineered for storage holds, tool lockers, and coffer dams requiring frequent, reliable opening and rapid closure by crew members.
• Exposed Work Decks: Ideal for open foredecks, main decks, or transitional bulkheads prone to heavy seawater spray and standing washdown water.
• Rapid-Response Access Points: Provides a highly efficient entry point where quick physical clearance is required for maintenance or emergency damage control.
• Severe Atmospheric Exposure: Built for open weather decks, swim platforms, and work zones constantly hammered by high-salinity ocean spray where standard steel hardware prone to rapid freezing or rusting.

Primary Industries & Vessel Types:

• Commercial Workboats & Tugboats: Standard hardware for main decks on harbor tugs, push boats, and offshore supply vessels (OSVs).
• Inland & Coastal Barges: Fits perfectly on the deck flats of liquid cargo, aggregate, or hopper barges needing durable, raised hatch boundaries.
• Commercial Fishing Fleet: Built to withstand constant washdowns and high-impact deck activity on commercial trawlers and processing vessels.

• Premium Stainless Steel Hardware: Upgraded with high-grade stainless steel 2-point toggle dogs to deliver smooth mechanical movement, superior corrosion resistance in saltwater spray, and consistent sealing force over years of service.
• Raised Coaming Protection: Features a 5" elevated vertical frame wall that acts as a natural structural barrier against pooling water, mud, and deck debris.
• Fast-Acting 2-Dog Mechanism: Replaces tedious multi-bolt perimeter rings with 2 high-leverage tightening dogs, vastly reducing the time required to secure or open the hatch.
• Elongated Clear Opening Design: Sized at 15" Width x 23" Length to provide an optimal clearance profile for personnel entry and quick cargo transfer.
• Heavy-Duty Structural Steel: Fabricated from thick, high-tensile structural steel to prevent cover deformation and survive severe impact on commercial work decks.
• Buna-N High-Compression Gasket: Features a premium Buna-N (Nitrile) rubber gasket track providing excellent sealing performance and broad resistance to fuels, oils, and marine chemicals.
• Universal Shipyard Finish: Arrives shot-blasted and coated with a universal shipyard primer (painted), making the assembly completely ready for immediate welding and final coating at the shipyard.

• Qualified Personnel Requirement: Installation of the 15" x 23" raised 2-dog hatch must be performed by qualified marine welders or fitters in accordance with applicable classification society standards (ABS, DNV, Lloyd's).
• Galling Prevention: Because this model is outfitted with premium stainless steel dog hardware, always apply a high-quality marine anti-seize lubricant specifically rated for stainless steel to all adjustable thread components before final calibration to completely prevent thread galling or cold-welding.
• Surface Preparation & Alignment: The 5" raised coaming must be perfectly aligned over a clean deck cutout and securely welded to prevent thermal warping or twisting of the perimeter sealing seat during fabrication.
• Dog Tension Calibration: Following structural welding, adjust individual dog tension nuts to ensure the cover seats evenly across the entire frame and compresses the Buna-N gasket uniformly.
• Mechanical Verification: Cycle both mechanical dog levers to verify they articulate smoothly and lock down tightly without catching or binding.
• Debris Inspection: Prior to closing, ensure that the gasket track, coaming rim, and dog catch plates are completely free of weld spatter, slag, rust, or heavy topcoat accumulation.