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SELECTION GUIDE

Overall dimensions from Lewmar's factory range drawings for the older Low Profile, Medium Profile and Ocean hatches and the Old Standard, New Standard and Atlantic portlights – use them to identify the size you have on board.

DocumentLewmar Hatch & Portlight Range Dimensions (Older Ranges)
FormatPDF · 1 page · 0.1 MB
LanguageEnglish
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Low Profile Hatch range drawingPDF · 1 p.Medium Profile hatch range drawingPDF · 1 p.Ocean hatch range drawingPDF · 1 p.Old Standard portlight range drawingPDF · 1 p.New Standard portlight range drawingPDF · 1 p.Atlantic portlight range drawingPDF · 1 p.
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How to UseLow ProfileMedium ProfileOceanPortlightsProducts
Lewmar Hatch & Portlight Range Dimensions (Older Ranges)

How to Use These Drawings

  • Measure the outside of the frame on deck or cabin side and compare width × height with the tables.
  • All dimensions are in mm, copied from the Lewmar enquiry drawings (dated 1999–2002). Every sheet is marked NOT TO SCALE: do not print and trace them.
  • These are overall frame dimensions, not cut-out sizes. For a replacement, check the cut-out of the current hatch or portlight before cutting.

Low Profile Hatch Range

Size Width Height
00 281.0 281.0
03 301.0 246.0
10 330.0 330.0
20 417.0 272.0
30 530.0 397.0
40 491.0 491.0
41 491.0 246.0
44 512.0 512.0
50 577.0 447.0
54 577.0 462.0
60 577.0 577.0
65 696.7 554.0
18 (round) 490.0 493.0
22 (round) 588.0 591.0

Round sizes 18 and 22 also show a hinge dimension of 141.0 (size 18) and 173.0 (size 22). Size 65 is tapered. Drawing ISS.4, 13-DEC-00.

Lewmar Low Profile hatch range drawing

Medium Profile Hatch Range

Size Width Height Corner radius
30 527 397 R78
40 492 492 R78
44 513 513 R78
50 578 448 R78
54 578 463 R78
60 578 578 R78
70 698 698 R78
77 770 770 R78

Drawing ISS.3, 13-DEC-00.

Lewmar Medium Profile hatch range drawing

Ocean Hatch Range

Size Width Height Corner radius
00 275 275 R69
10 324 324 R75
20 411 266 R69
30 521 391 R75
40 485 485 R75
44 * 509 509 R76
50 574 444 R76
54 * 574 459 R76
60 574 574 R76
65 524 405 R76
70 694 694 R76
75 655 543 R76
77 768 768 R76

* Sizes 44 and 54 are marked "minimum size for EC escape hatches". Sizes 65 and 75 are tapered: check the drawing for where those dimensions are taken. Drawing ISS.1, 07-APR-99.

Lewmar Ocean hatch range drawing

Portlight Ranges

(Old) Standard Portlight Range

Size Length Height
0 326 177
1 369 193
2 427 177
3 451 193
4 649 193
4L 710 193
5 (not drawn) 451 266

Size 5 is not drawn; the sheet gives it as 266 × 451 over all. Size 4L has a raked end. Drawing ISS.1, 18-APR-02.

New Standard Portlight Range

Size Length Height Corner radius
0 323.0 176.0 R61.0
1 367.0 191.0 R61.0
1 round end 367.0 191.0 R95.5
2 425.0 176.0 –
3 449.0 191.0 R61.0
4 646.0 191.0 R61.0
4R 708.0 195.0 / 183.5 R61.0
5 449.0 264.0 R61.0
7 round end 425.0 191.0 –

Size 4R is raked: top edge at 1.5 DEG, raked end at 24°, 195.0 high at the square end and 183.5 at the raked end. Drawing ISS.3, 14-JUL-99.

Atlantic Portlight Range

Size Length Height Corner radius
10 304.0 174.0 R71.0
30 400.0 200.0 R71.0
32 400.0 200.0 R100.0
40 480.0 200.0 R71.0
52 559.0 241.0 R71.0
60 600.0 200.0 R71.0
64 650.0 200.0 R71.0

Atlantic drawing ISS.1, 29-SEP-99.

Lewmar old Standard portlight range drawing

Lewmar new Standard portlight range drawing

Lewmar Atlantic portlight range drawing

Need a part that isn't listed? Ask us to source it and quote the part number from the PDF.

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