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Freeman Compression seal gasket Model 30 (30" / 762 mm)
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Deck hatches & spare partsSpare Parts & MaintenanceSpare Parts – Square and Rectangular HatchesModel 2727 (27" x 27")

Spare Parts for Freeman Marine Model 2727 Square Deck Hatches (27" x 27" / 686 x 686 mm)

Welcome to Bövik Marin AB – authorized European supplier of genuine factory replacement parts for Freeman Marine Model 2727 square cast deck hatches. Offering an expansive 27 x 27 inch (686 x 686 mm) clear opening, Model 2727 is an oversized commercial access closure engineered for machinery spaces, rudder compartments, heavy gear transfer, and personnel passage in full survival suits across Coast Guard cutters, patrol craft, fishing vessels, and workboats.

Model 2727 (Series 2438 / Model 2727K) is engineered with Freeman's heavy-weather knife-edge sealing system. The machined perimeter knife-edge rim and integrated coaming drainage gutter effectively capture and route green-water runoff away from below-deck compartments. Mechanically, a central 4-hole cam hub synchronizes four heavy-duty 16.50-inch dog arms to deliver balanced, powerful perimeter clamping force in under a quarter-turn via the flush deck handle or inside emergency escape handle.

Below you will find all genuine mechanical and elastomeric components required for scheduled maintenance, survey overhauls, and complete mechanism rebuilds for Model 2727:

Model 2727 Component Directory (Featured Items Below):

1. Sealing System & Gaskets • Knife-Edge Gasket aluminum ring (Part no. 9813-2021)
• Knife-Edge Gasket steel ring (Part no. 9885-2015)
Hollow D-profile neoprene elastomer (686x686 mm).
2. Dogging Mechanism & Arms • Aluminum Dog Arm 16.50" (Part no. 0211-2032)
• 4-Hole Cam Hub (Part no. 0011-2002)
• Optional: 316 S/S stainless dog arms
3. Actuation & Drive Shaft • Flush Deck Handle 316 S/S
• Handle Spindle & Roll Pins (15"+ standard)
• Inside Escape Handle Assemblies
4. Center Bushing & Hardware • Universal Bushing Overhaul Kit (Part no. 0031-2204)
• Cam Buttons / Wear Pads (Part no. 0621-2004)
• Nylon Thrust Washers (Part no. 0413-2005)

Technical Guide: Maintenance and Component Specification for Model 2727 Square

The square geometry of Freeman Model 2727 (Series 2438) provides an exceptional access dimension for crew and heavy equipment where vessel frame spacing dictates a large square deck opening. Because Model 2727 is configured exclusively with knife-edge sealing, selecting the correct replacement gasket matching host coaming metallurgy is critical.

1. Knife-Edge Gasket Specification: Aluminum vs. Steel Coaming

The coaming on Model 2727 features a machined knife-edge rim flanked by a deep perimeter drainage gutter. The replacement gasket is a hollow D-profile marine neoprene elastomer designed to seat securely into the cover channel:

  • Aluminum Coamings (Part no. 9813-2021): Precision-molded gasket tailored for Freeman 2727 aluminum coamings. Compatible with Model 2727K lift-out covers.
  • Steel Coamings (Part no. 9885-2015): Specifically profiled with adjusted base width for Freeman steel weld-in rings. Engineered to endure continuous deck vibration and heavy green-water sea states.

2. 4-Arm Kinematics with 16.50" Dog Arms

Model 2727 operates via Freeman's central 4-hole marine aluminum cam hub (Part no. 0011-2002) and four heavy-duty 16.50-inch aluminum dog arms (419 mm, Part no. 0211-2032). Because the hatch spans 686 x 686 mm, these extended arms provide the substantial mechanical leverage needed to press the gasket firmly against the perimeter knife-edge. During scheduled maintenance, inspect dog arms for straightness and renew nylon cam buttons (Part no. 0621-2004) to ensure smooth travel across the hub tracks.

3. Center Bushing & Spindle Sealing

Moisture weeping beneath the flush deck handle indicates worn spindle O-rings. Model 2727 utilizes Freeman's heavy-duty Universal Center Bushing Overhaul Kit (Part no. 0031-2204), containing a marine-grade sleeve bushing, dual O-rings, and stainless roll pin. Always coat O-rings with waterproof marine grease during reassembly.

Need a Complete New Hatch Assembly or Replacement Deck Coaming?

If your coaming has suffered structural damage or you are engineering a new machinery access opening, explore complete hatch assemblies and genuine factory coamings:

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