Built for the Job. Certified for the Conditions.
The Commercial Grade Series Deck Hatch is designed for vessels that demand serious performance. Made from Almag-35 cast aluminum and fitted with stainless steel hardware, these hatches offer watertight integrity in a low-profile design.
Available in round, oval, or rectangular shapes, this series is Lloyd’s certified and ready to meet the demands of commercial fleets, offshore builds, and government craft. Optional powder coating and bolt-down rings make it highly adaptable to your project.
Key Features:
Almag-35 cast aluminum construction
Brushed aluminum finish with stainless steel T-handles
Inside/outside opening with heavy-duty floating hinges
Low-profile design (1/4″ above mounting surface)
Lloyd’s certified
Available in multiple shapes and sizes (5″ to 24″)
Optional: powder coating, steel weld rings, and bolt-down models
Commercial Grade Series
Deck Hatches
Recommended Applications:
- Offshore and commercial workboats
- Government and military fleet vessels
- Watertight access points in high-traffic decks
- Refits or OEM installs requiring certified durability
Standard Features
Almag-35 Construction
- Heavy Duty 535 Magnesium Hardened Aluminum
- Lightweight Combined with Strength & Durability
- Natural Brushed Finish
- Built & Tested for Harsh Marine Environments
Lloyd's Certified
- Tested to be Watertight, Submerged to 30 FT (10M) Head Pressure Testing
Low Profile Design
- Ergonomic Design Provides Under-Deck Space Savings
Floating Hinge System
- Allows for 180+ Degrees of Opening Angle
316L SS T-Handles & Hardware
- 316L for Rust & Corrosion Resistance
- Provides Robust Dogging Action
Ultra Lightweight
- 20-30% Lighter Than Competitors
- Without Sacrificing Strength & Durability
Inside/Outside Opening
- Interior & Exterior Escape Handle comes Standard
Key Materials
Almag-35
- Bomar uses 535 magnesium hardened aluminum to construct our Commercial Grade Series hatches. The raw almag-35 is heated to 1100 degrees F at the Bomar foundry and is then melted and poured into our proprietary cast molds.
Stainless Steel
- The Commercial Grade Series watertight hatches are professionally assembled in-house with 316L, marine grade, stainless steel T-handle & fasteners. Stainless steel is ideal for harsh marine environments due to it’s rust & corrosion resistance, strength and luster.
Additional Options
Flexible Sizing
- 12″ to 43″ to Accomodate Ship Builders & Architects
- Available in Square, Rectangle, Oval and Round Form Factors
Personalization Options
- Custom Powdercoating
- CE Approvals
- Bomar Spare Parts & Installation Accessories Readily Available
what makes us different
Why Choose Bomar Commercial Grade Deck Hatches?
Built for Tough Marine Use
From offshore vessels to industrial fleets, our cast aluminum hatches are engineered for watertight strength and long-term resilience.
Custom Fit for Any Vessel
Available in multiple shapes, sizes, and finish options — including powder coating and bolt-down variations — to match your application.
Built for Strength, Finished for Fit
Precision-cast Almag-35 with stainless steel hardware ensures a tight seal, easy operation, and low-profile installation in any deck layout.
American Design Used Worldwide
Bomar hatches are manufactured in the United States and field-proven across commercial, military, and recreational marine industries.
Dependable. Durable. Commercial-Ready.
The Commercial Grade Series was built with one purpose: to perform where failure isn’t an option. Trusted by professionals around the world — Bomar delivers.
Explore the Rest of the Deck Hatch Series
Not Sure Where to Start?
Tell us about your build. Whether you’re designing a fleet of patrol vessels or refitting a custom sportfisher, Bomar has the marine closure solution to fit your needs.
