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Lewmar - Medium Profile Hatch

Lewmar - Medium Profile Hatch


Ideal as foredeck hatch on larger offshore yachts, the Lewmar - Medium Profile has thicker acrylic and deeper frame sections for greater strength and durability.  It features Lewmars unique sealing system, allowing for easy acrylic replacement.  All while retaining the smooth, modern lines of the Low Profile Hatch. All sizes certified for CE Category A, Areas 2, 3 & 4.

Price:  £369.95
RRP:  £452.62
Save:  £82.67
(Inc. VAT @ 20%)
Medium Profile:  

Article Number:  39930020

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This is some information about Lewmar

  • Moulded lever stay and handle assemblies
  • Fully secure locked vent position
  • Handles incorporate a red locking button and also feature external handles to allow the lid to be opened from the outside
  • Shock resistant acrylic window
  • Replaceable acrylic without the use of sealant
  • Lower frame gutter

Lewmar - Medium profile hatches

Size Style Overall size Cut-out size*
(X 1)
(Y 1)
(R 1)
30 Rectangular 527mm 397mm 32mm 72.5mm 457mm 327mm 42.5mm
40 Square 492mm 492mm 32mm 72.5mm 421mm 421mm 42.5mm
44 Square 513mm 513mm 32mm 72.5mm 442mm 442mm 42.5mm
50 Rectangular 578mm 448mm 32mm 72.5mm 507mm 377mm 42.5mm
54 Rectangular 578mm 448mm 32mm 72.5mm 507mm 377mm 42.5mm
60 Square 578mm 578mm 32mm 72.5mm 507mm 507mm 42.5mm
70 Square 698mm 698mm 32mm 72.5mm 627mm 627mm 42.5mm
77 Square 770mm 770mm 32mm 72.5mm 699mm 699mm 42.5mm

* Cut-Out sizes will change with Trim Kits are used.

  • Hatches should be fitted to a flat surface with a maximum tolerance of ± 1mm
  • Fastening size for lower frame sections use 5mm CSK screws No. 10 UNC 2BA
  • Fastening size at the hinge section use M6 (¼") screws
  • All hatches have a 'Lower Frame Flange' of 15mm

Lewmar Hatch & Portlight Fitting Guide (PDF)

CE Regulations Explained

The letters CE (Conformité Européenne) appear on many products that are traded on the single market in the European Economic Area (EEA).

The CE marking is required for many products. It:

  • shows that the manufacturer has checked that these products meet EU safety, health or environmental requirements
  • is an indicator of a product’s compliance with EU legislation
  • allows the free movement of products within the European market

By placing the CE marking on a product a manufacturer is declaring, on his sole responsibility, conformity with all of the legal requirements to achieve CE marking. The manufacturer is thus ensuring validity for that product to be sold throughout the EEA. This also applies to products made in third countries which are sold in the EEA and Turkey.

The CE Regulations apply to craft up to 24m in length that are sold in the European Union. Although the regulations may not apply to your boat, they are a useful guide for small craft throughout the world.

The regulations have Design Categories for boats based on their intended use and propulsion (sail or power). They are as follows -

A. OCEAN: Designed for extended voyages where conditions may exceed wind force 8 (Beaufort scale) and significant wave heights of 4m and above and vessels largely self-sufficient.

B. OFFSHORE: Designed for offshore voyages where conditions up to and including wind force 8 and significant wave heights up to and including 4m may be experienced.

C. INSHORE: Designed for voyages in coastal waters, large bays, estuaries, lakes and rivers where conditions up to and including wind force 6 and significant wave heights up to and including 2m may be experienced.

D. SHELTERED WATERS: Designed for voyages on small lakes rivers and canals where conditions up to and including wind force 4 and significant wave heights up to and including 0,5m may be experienced.

The Regulations divide up the boats hull and deck into four specific Areas. A product, which is suitable for fitting to an area for which it is approved, is suitable for all the areas below its category. For example, a portlight, which is approved for Area 2 may also be fitted to Areas 3 and 4, but not Area 1.

CE Area diagrams courtesy of Lewmar Hatch and Portlight fitting guide.
Average Rating (1 Review):  
Write a Review and share your opinions!

lewmar hatch
Saturday, 20 May 2017  | 

it is a replacement for a broken hatch of my boat. good product as expected

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