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Sailiboat Hatches & PortlightsHow-To Guides

Bring light and fresh air below deck with the right hatches and portlights. Learn how to size, seal, and replace them to keep your cabin dry, bright, and ventilated.

  • Lewmar Low Profile Hatch Size 40, grey acrylic / silver frame

    How to Rebuild a Lewmar Low Profile Hatch

    A practical guide to servicing a Lewmar Low Profile hatch part by part — diagnosing hinge, seal or friction-lever failure, the general disassembly/reassembly sequence, and when a full hatch replacement...

  • Lewmar Flush Hatch 2G Size 60 Dark Grey Acrylic

    Why get Lewmar Ocean Hatches if you cruise

    Lewmar Ocean Hatches are the go-to deck hatch for cruising sailors because their rugged, high-profile design delivers the strongest weather protection and best offshore ventilation of any standard Lewmar hatch....

  • Vetus Altus Escape hatch ALT6363SL with dark smoke acrylic lens and aluminum frame

    Vetus Altus Hatch Specifications

    Vetus Altus hatches come in three functional types — Escape, Deck, and Ventilation — each certified to CE Category AII with a dark smoke or opaque acrylic lens and a...

  • Lewmar Low Profile Hatch Size 60 with Stay - Grey Acrylic / Silver Frame

    Lewmar Low Profile Hatch Specifications

    Lewmar Low Profile Hatches are corrosion-resistant deck hatches with a sleek, low-rise anodized aluminum frame and grey acrylic lens, sized 0 through 60 for everything from small ventilation openings to...

  • Lewmar Low Profile Hatch Size 44 lid assembly with friction lever

    Lewmar Hatches Selection

    Lewmar builds three main sailboat deck hatch families — Low Profile (25 mm lids), Medium Profile (32 mm lids), and the classic Ocean Hatch (9.53 mm acrylic) — and the right one depends...

  • Lewmar Low Profile Hatch - 12 x 12 in. (305 x 305 mm) (Grey Acrylic / Silver Frame) - Size 10

    How are Lewmar Low Profile Hatches composed?

    A Lewmar Low Profile hatch is built from seven main parts: the acrylic lid, a rubber seal, inside and outside handles, a friction hinge kit, joining inserts and screws, upper...

  • Vetus Hatch Adjuster Type PH marine ventilation hardware

    Hatches & Portlights

    Marine hatches and portlights are deck and hull openings that bring light and fresh air below, and the right choice comes down to where it mounts, how watertight it must...

  • Lewmar hatch catch block, a marine ventilation maintenance part

    Hatches and Portlights Maintenance

    Hatch and portlight maintenance comes down to three habits: rinse with fresh water after every sail, clean acrylic and painted aluminum only with mild soap (never solvents), and lubricate seals...