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HATCHES AND PORTLIGHTS

Flush Hatch

Lewmar pioneered the high volume flush hatch platform back in 2006, bringing what was then superyacht studying into mainstream boat production. The precision of the fit makes for a sleek, modern look and means no more stubbed toes for boat owners.

  • Clean aesthetics
  • Trim kit fits all standard sizes
  • EPDM seal provides watertight structure
  • Dark grey acrylic options keeps cabin cooler
  • Water drained effortlessly away by deck-molded channels
  • Strong, stylish handles and hinges.
  • For technical information, visit Lewmar Hatches Specifications

    Low Profile Hatch

    Best mid range hatch in the business.

    The Low Profile Hatch has soft styling and sleek looks, ideal for use on a powerboat. Smaller ventilation hatches are suitable for any deck location on sailboats, while the larger sizes can be used as a foredeck hatches on smaller to midsize yachts.

  • Outside handles allow the hatch to be opened from on deck if it is not locked
  • Low profile hatches open up to 180 degrees (round hatches open to 170 degrees)
  • Friction levers hold the lid open in any position up to 95 degrees
  • Anodized aluminum frame for corrosion resistance
  • Curved upper frame profile for strength as well as modern styling
  • Available in Round and D-Hatch configuration
  • For technical information, visit Lewmar Hatches Specifications

    Vetus Altus Hatch

    Best mid range hatch in the business.

    ALTUS is made of sturdy aluminum profile (height 13/16” (21 mm)) with a satin sheen anodized frame and is suitable for design category A and appliance location area II. The acrylic has a thickness of ⅜” (10 mm) and is “dark mode” colored. These hatches come with adjusters which are stylish and easy to operate, allowing the lid to be held open at almost any angle up to 90 degrees. Type ALTUS can be fitted on deck and opened from the inside or outside. It has a ventilation position and can be locked completely watertight.

    Escape Hatches (model 1)

    Type External Dimensions A X B inches (mm) Cut-out Dimensions C X D inches (mm) Model Number of handles
    ALT6363SL 27 5/8 x 27 5/8 (701 x 701) 24 11/16 x 24 11/16 (627 x 627) 1 2
    ALT5151SL 23 1/16 x 23 1/16 (581 x 581) 19 15/16 x 19 15/16 (507 x 507) 1 2
    ALT4747SL 21 7/16 x 21 7/16 (544 x 544) 18 1/2 x 18 1/2 (470 x 470) 1 2
    ALTD520SL 23 5/16 x 20 5/8 (592 x 524) 20 3/8 x 17 11/16 (518 x 450) 2 2
    ALTR529SL 23 5/16 (592) 20 3/8 (518) 3 2

    Deck Hatches (model 2)

    Type External Dimensions A X B inches (mm) Cut-out Dimensions C X D inches (mm) Model Number of handles
    ALT4242SL 19 1/2 x 19 1/2 (495 x 495) 16 9/16 x 16 9/16 (421 x 421) 1 2
    ALT5038SL 22 14/16 x 17 3/7 (581 x 451) 9 15/16 x 14 13/16 (507 x 377) 1 2
    ALT4633SL 20 14/16 x 15 13/16 (531 x 401) 18 x 12 7/8 (457 x 327) 1 2
    ALTR420SL 19 5/16 (491) 16 7/16 (417) 3 2

    Ventilation Hatches (model 3)

    Type External Dimensions A X B inches (mm) Cut-out Dimensions C X D inches (mm) Model Number of handles
    ALT2626SL 13 1/8 x 13 1/8 (334 x 334) 10 1/4 x 10 1/4 (260 x 260) 1 2
    ALTD420SL 19 5/16 x 12 13/16 (491 x 326) 16 7/16 x 9 15/16 (417 x 252) 1 2
    ALA3502SL 16 9/16 x 10 7/8 (421 x 276) 13 11/16 x 7 15/16 (347 x 202) 1 2

    Vetus PZ Type Portlight

    Type PZ (AI)

    Heavy-duty portholes.

    These portholes are suitable for use on the hull side. The 3/8" (10 mm) “smoke” colored opening pane is set in a satin anodized aluminum frame. Black or white powder-coated frames are optional. The clamp fixing ensures that no fasteners are visible from either inside or outside. The portholes can be held open in any position due to the friction type hinges. In the closed position, knobs ensure complete water tightness. The porthole can be fitted in a surface with a minimum thickness of 1/16” (2 mm) and a maximum thickness of 11/16” (18 mm). As standard, a mosquito screen is supplied.

    Dimensions

    Type External Dimensions A X B inches (mm) Cut-out Dimensions C X D inches (mm) Cut-out R inches (mm) Type mosquito screen
    PZ611 11 27/32 x 6 29/64 (301 x 164) 10 29/32 x 5 33/64 (277 x 140) 2 1/8 (54) HOR61
    PZ621 14 31/64 x 7 3/64 (368 x 179) 13 35/64 x6 7/64 (344 x 155) 2 13/32 (61) HOR62
    PZ631 24 31/64 x 7 3/4 (622 x 197) 23 35/64 x 6 13/16 (598 x 173) 2 13/32 (61) HOR63
    PZ641 15 5/8 x 7 3/4 (397 x 197) 14 11/16 x 6 13/16 (373 x 173) 2 13/32 (61) HOR64
    PZ651 15 45/64 x 7 31/64 (399 x 190) 14 49/64 x 6 17/32 (375 x 166) 2 1/8 (54) HOR65
    PZ661 15 45/64 x 9 7/32 (399 x 234) 14 49/64 x 6 17/64 (375 x 210) 2 1/8 (54) HOR66
    PZ671 17 3/4 x 10 25/32 (451 x 274) 16 13/16 x 9 27/32 (427 x 250) 2 1/8 (54) HOR67

    Type PZ (AIII)

    Medium duty portholes.

    These portholes are suitable for use in the coachroof side. They come with a 10mm “smoke” colored, unframed opening pane. The clamp-type installation ensures that no fasteners are visible from either inside or outside. The portholes can be held open in any position due to the friction type hinges. In the closed position, 2 knobs ensure complete water tightness. The porthole can be fitted in a surface with a minimum thickness of 1/16” (2 mm) and a maximum thickness of 11/16” (18 mm).

    Dimensions

    Type External Dimensions A X B inches (mm) Cut-out Dimensions C X D inches (mm) Cut-out R inches (mm) Type mosquito screen
    PZ613 11 7/8 x 6 7/16 (301 x 164) 10 7/8 x 5 1/2 (277 x 140) 2 1/8 (54) HOR61
    PZ623 14 1/2 x 7 1/16 (368 x 179) 13 9/16 x6 1/8 (344 x 155) 2 3/8 (61) HOR62
    PZ633 24 1/2 x 1 3/4 (622 x 197) 23 9/16 x 6 13/16 (598 x 173) 2 3/8 (61) HOR63
    PZ643 15 5/8 x 7 3/4 (397 x 197) 14 11/16 x 6 13/16 (373 x 173) 2 3/8 (61) HOR64
    PZ653 15 11/16 x 7 1/2 (399 x 190) 14 3/4 x 6 9/16 (375 x 166) 2 1/8 (54) HOR65
    PZ663 15 11/16 x 9 3/16 (399 x 234) 14 3/4 x 8 1/4 (375 x 210) 2 1/8 (54) HOR66
    PZ673 17 3/4 x 10 13/16 (451 x 274) 16 13/16 x 9 13/16 (427 x 250) 2 1/8 (54) HOR67

    Beckson Self Drain Portlight

    An innovatively designed with an angled drainage ramp molded on the inside of the spigot. This design promotes drainage without having the hassle of making angled cuts in the hull. This also allows for thru-bolting, which is impossible in windows where an angled spigot extends below the bolt holes. The internal angle seats tightly against the gasket and lends, thus omitting an exterior water retention ledge present in most other ports. (No water-fall when you open the port after a rain).

    Port Size Inside Frame Outside Frame Lens OD Screen OD
    410 4-1/2" x 10-1/2"
    (11.4cm x 26.7cm)
    5-1/2" x 12-3/8"
    (17.1cm x 32.4cm)
    4-5/8" x 10-7/8"(10.2cm x 27.6cm) 4-3/16" x 10-7/16"
    (10.6cm x 26.5cm)

    Quick Maintenance Guide


    • Clean the anodized or powder-coated aluminum profiles regularly; 2 to 4 times a year, depending on how dirty they get.
    • Use only neutral cleaning agents. Do NOT use alkaline, acid and/or abrasive cleaners.
    • After cleaning, apply a thin coat of transparent wax for protection.
    • Protect the sealing rubbers with talcum powder.


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