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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 3036 (30" x 36")

Spare Parts for Freeman Marine Model 3036 Rectangular Deck Hatches (30" x 36" / 762 x 914 mm)

Welcome to Bövik Marin AB – authorized European supplier of genuine factory replacement parts for Freeman Marine Model 3036 rectangular cast deck hatches. Offering a massive 30 x 36 inch (762 x 914 mm) clear opening, Model 3036 is Freeman's largest rectangular deck closure, engineered for heavy machinery space access, engine and pump rigging, cargo transfer, and certified personnel transit across cargo vessels, trawlers, tugs, oceanographic research ships, and offshore work barges.

Model 3036 (Series 2429 lift-out / Model 3036K and Series 2467 hinged / Model 3036-HK) is built with Freeman's heavy-weather knife-edge sealing system. To guarantee 100% watertight integrity across this substantial clear opening, the hatch operates via Freeman's heavy-duty 8-arm dogging linkage: a central 8-hole cam hub synchronizes eight 15.00-inch dog arms to distribute immense, uniform clamping force around the entire perimeter in under a quarter-turn via the flush deck handle or inside escape wheel.

Below you will find all genuine mechanical and elastomeric components required for scheduled maintenance, survey overhauls, and complete mechanism rebuilds for Model 3036:

Model 3036 Component Directory (Featured Items Below):

1. Sealing System & Gaskets • Knife-Edge Gasket aluminum ring (Part no. 9813-2022)
• Knife-Edge Gasket steel ring (Part no. 9885-2013)
Hollow D-profile neoprene elastomer (762x914 mm).
2. Dogging Mechanism & Arms • Aluminum Dog Arm 15.00" (Part no. 0211-2030)
• 8-Hole Cam Hub (Part no. 0011-2007)
• 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 Wheel 15" (for 8-hole hub)
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 8-Arm Kinematics for Model 3036 Rectangular

The rectangular geometry of Freeman Model 3036 (Series 2429 & 2467) is engineered for the heaviest commercial duty cycles where maximum deck cutout dimensions are required for handling bulky machinery components. Dogging and sealing a hatch across a 762 x 914 mm clear span imposes immense structural loads, which is why Freeman equips Model 3036 with a dedicated 8-arm linkage assembly.

1. 8-Arm Kinematics with 8-Hole Cam Hub & 15.00" Dog Arms

  • 8-Hole Cam Hub (Part no. 0011-2007): Unlike smaller closures with 3 or 4 dogging points, Model 3036 utilizes Freeman's heavy-duty 8-hole marine aluminum cam hub. The hub actuates eight dog arms simultaneously, distributing operating torque evenly around the expansive rectangular perimeter.
  • 15.00-Inch Aluminum Dog Arms (Part no. 0211-2030): Model 3036 operates with eight 15.00-inch dog arms (381 mm). Inspect dog arms for straightness during scheduled maintenance, renew nylon cam buttons (Part no. 0621-2004), and grease all eight hub cam tracks with high-adhesion marine grease (e.g., Vickers Biogrease EP2).
  • Inside Escape Wheel 15" (Part no. 0112-2156): Overcoming the friction of eight dog arms and heavy gasket compression requires substantial leverage from below. Model 3036 utilizes Freeman's 15-inch round vibratory-finished aluminum escape wheel designed exclusively for 8-hole hubs.

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

The coaming on Model 3036 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. 9813-2022): Precision-molded gasket tailored for Freeman 3036 aluminum coamings. Compatible with both lift-out covers (3036K) and hinged variants (3036-HK).
  • Steel Coamings (Part no. 9885-2013): Specifically profiled with adjusted base width for Freeman steel weld-in rings. Engineered to endure continuous deck vibration and heavy green-water sea states.

3. Center Bushing & Spindle Sealing

Moisture weeping beneath the flush deck handle indicates worn spindle O-rings. Model 3036 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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