The Maxwell Offshore Deck Hatch 559mm x 559mm is a standout in the MAGNUS line, engineered for offshore reliability and seakeeping where hull integrity and safe egress matter most. With a hand-polished anodized aluminum frame and a robust construction, this escape hatch is built to endure the harsh realities of ocean environments while delivering effortless operation.

Key advantages at a glance

• Extra-heavy-duty offshore design rated and engineered for ocean use, CE classified AI, and suitable for deck or hull mounting in demanding vessels.
• 180-degree opening with minimal obstruction, so you can pass through quickly in an emergency or during routine access without snagging.
• Friction hinges hold the hatch at any angle—no stays required—giving you secure positions whether you’re ventilating, fully closed, or open for quick egress.
• Versatile operation can be opened from inside or outside the boat, and can be left locked in either completely watertight mode or a ventilation position.
• Habitable multihull suitability designed for escape in inverted configurations, adding a crucial safety option where living space layout demands flexibility.
• Premium materials hand-polished satin finish aluminum frame and a 10mm dark smoke acrylic lid for durability and clear visibility in all conditions.
• Direct-from-supplier shipping ensures you receive a ready-for-install, ocean-ready hatch with genuine Vetus Magnus engineering.

Specifications and fitment

• Overall Size (A/B): 563 × 563 mm
• Cut-Out Size (C/D): 507 × 507 mm
• Corner Radius: 43 mm
• Height: 36 mm
• Frame and Lid: Hand-polished satin anodized aluminum frame with a 10 mm 'Dark Smoke' acrylic lid
• Support Type: Friction hinge
• Opening: 180-degree maximum travel
• Mounting: Deck or hull application, ocean-use capable
• Application notes: Suitable for habitable multihulls as an escape hatch in inverted configurations
• Product code: 4647 J
• Finish: Hand-polished satin

Why this hatch matters on your vessel

On offshore and coastal boats alike, having a dependable escape hatch can be a real difference-maker. The Maxwell Offshore Deck Hatch 559mm x 559mm combines a proven, heavy-duty marine design with practical features that address real-world sail and powerboat needs. The 180-degree opening reduces the risk of snagging during emergency egress, while the friction hinges lock the hatch in place without extra hardware. Whether you’re venting a cabin on a hot day, accessing a forward locker, or planning for emergency egress in a global voyage, this hatch delivers predictable, repeatable performance.

Who benefits most

This hatch is ideal for offshore vessels, long-range cruisers, offshore supply boats, and habitable multihulls where a reliable, opens-easily escape hatch is essential. It suits crews who value safety in inverted configurations, owners who demand a clean, low-profile deck integration, and yards looking to standardize on a marine hatch with proven ocean-grade credentials.

Practical notes and care tips

• Install in a compatible deck or hull cut-out for 507 × 507 mm openings to ensure a snug, watertight fit when closed.
• Regularly inspect the friction hinges and frame finish to maintain smooth operation and long-term corrosion resistance in saltwater environments.
• Use the hatch’s locked positions strategically—fully watertight for rough seas or ventilated for crew comfort when weather allows.

With the Maxwell Offshore Deck Hatch 559mm x 559mm, you’re choosing a purpose-built escape hatch that pairs sophisticated marine engineering with practical operation. It’s more than a hatch—it’s a dependable safety and access solution for serious offshore sailing and professional vessels.