Freeman Cast Hatches – Official Distributor
B2B Marine is the exclusive distributor of Freeman cast hatches in the Netherlands, Belgium, and Germany.
We supply the full range of Freeman Marine cast hatches, known worldwide for their unmatched durability, quality, and performance in demanding marine environments. Whether you’re outfitting a commercial vessel, workboat, or luxury yacht, Freeman hatches offer reliable watertight solutions trusted by shipyards and naval architects across the globe.
With our in-house engineering team, we also support naval architects and ship designers by integrating Freeman hatches directly into your technical drawings and design process. This ensures proper fit, functionality, and compliance from the early stages of your project.
Let B2B Marine be your trusted partner in both product supply and technical integration.
For any questions (engineering or sales) contact sales@b2bmarine.com

Your solution partner in Shipbuilding
Freeman Cast Hatches 2400 Series
B2B Marine is the exclusive distributor of Freeman Marine cast hatches in the Netherlands, Germany, and Belgium.
FREEMAN hatches have more quick-acting flush hatch models and features than any manufacturer.
AdvanTec Marine’s Freeman hatches are used on a wide variety of fishing boats, tugs, barges, research vessels, offshore tenders, rescue craft and other workboats.
The Freeman hatch is designed for new boats, or replacing other hatches in standard openings, or for improving existing craft.
The hatches are fast acting and easy to use. Simply grasp the handle and pull, the shaft slides into place, and with less than a quarter turn, completely disengages the locking mechanism. The dogs and linked handle do the work smoothly in just a second.
Our easy lift system allows simple removal. With the locking mechanism disengaged, the hatch is resting on the deck ring and can be lifted out with one hand
Freeman Cast Hatch Standard Features:
- Evenly spaced dogging arms exert uniform force on the cover plate. (Either 3, 4, or 8 dogs depending on size of hatches)
- Handle position shows when dogging arms are engaged or disengaged.
- Handle is always attached. Hatch and handle fit flush with the deck with the handle in a recessed locked position.
- Watertight hatches, designed to seal up to 30’ intermittent head, the double-sealing gasket seals tighter under pressure.
- Versatile installation, hatches can be installed in steel, aluminum, wood, or fiberglass decks.
- Complete units include aluminum or steel mounting rings for bolt-in or weld-in installations.
- Dogging mechanism assures smooth consistent action; no binding or jamming.
- Quick-acting dogging eliminates over or under tightening; hatch
operates the same each time.
Typical Hatch Assembly and Freeman Hatch Dogging Mechanism
Evenly spaced dogging arms (either 3, 4 or 8
depending on size of hatch) exert uniform sealing
pressure on the cover plate. The unique design,
fit, and adjustability of Freeman’s dogging
mechanism assure smooth, consistent action;
no binding or jamming of parts.
Compression vs. Knife Edge
Compression Seal 2400 Series Hatches
These Freeman hatches have easy-to-clean spigots, feature long gasket life, and are economical to purchase.
- Aluminum Deck Rings are intended to be weld installed into aluminum decks and bolt installed into other deck materials.
- Steel Deck Rings are to be weld installed into steel decks only.
- Watertight seal to 30 foot intermittent head, continuous 10 foot head top-loaded pressure (on properly installed and adjusted
hatch assemblies).
Knife-edge Seal 2400 Series Hatches
These Freeman hatches feature a coaming with drain gutter and an aggressive sealing rim edge. A drain fitting can be installed to minimize water from entering enclosure when hatch is initially opened.
- Aluminum Deck Rings are intended to be weld installed into aluminum decks and bolt installed into other deck materials
- Steel Deck Rings are to be weld installed into steel decks only.
Handle Options
Freeman Hatches are offered with various handle options.
How To Measure Hatches
FREEMAN 2400 SERIES HATCHES
Hatches are identified by their shape and clear opening size. To determine cast hatch size, measure the clear opening of the ring
(coaming), which is the smallest dimension of the hole as shown in these examples.