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Lewmar 39670050 Ocean Hatch Size 70 Flat Base Marine Deck Hatch

Manufacturer

Lewmar

<h3>About Lewmar: A Legacy of Marine Innovation Since 1946</h3><p><strong>Lewmar</strong> traces its roots to 1946, when <a href="/7429-lewmar">the brand</a> was founded by sailing enthusiasts Len Lewery and Leslie Marsh. What began as a modest workshop producing dinghy fittings has grown, over more than seven decades, into one of the most respected names in global marine equipment manufacturing. Today, Lewmar is part of the Lippert family of brands — a leading international supplier serving the marine, RV, and related industries — while retaining the engineering heritage and craftsmanship that made its reputation.</p><p>Headquartered in Havant, Hampshire, in the United Kingdom, Lewmar designs and manufactures its products primarily at its UK production facility. That combination of British engineering tradition and modern manufacturing technology is central to what sets Lewmar apart. The brand has earned multiple Queen's Awards and a pair of prestigious DAME Awards — including recognition for its revolutionary Ocean Block and the innovative OneTouch winch handle — underlining its consistent commitment to pushing marine technology forward.</p><h3>A Complete Solution for Every Vessel</h3><p>One of Lewmar's defining strengths is the sheer breadth of its catalog. Whether you're outfitting a compact day fishing boat or equipping a luxury mega-yacht, the brand offers a solution designed to fit. Its core product lines span <a href="/m/7429/c/windlasses">windlasses</a>, <a href="/m/7429/c/winches">winches</a>, <a href="/m/7429/c/hatches">hatches and portlights</a>, <a href="/m/7429/c/thrusters">bow and stern thrusters</a>, and a comprehensive range of <a href="/m/7429/c/anchoring">anchoring systems</a> — all engineered to perform reliably in demanding marine environments.</p><p>Lewmar <a href="/m/7429/c/windlasses">windlasses</a> have become a benchmark product for the brand, with models like the V700 Series, Pro Series 700, and ProFish 1000 delivering robust anchor deployment and retrieval performance for both recreational and commercial vessels. Their <a href="/m/7429/c/winches">winch lineup</a> — available in manual and electric variants — includes the acclaimed EVO self-tailing winch range, designed for sailors who demand the highest levels of sail-handling efficiency. The Wavegrip jaw system, an early Lewmar innovation, helped define the modern self-tailing winch market.</p><p>Above deck, Lewmar <a href="/m/7429/c/hatches">hatches and portlights</a> are engineered for watertight integrity without sacrificing ventilation or aesthetic appeal. Low-profile and Ocean hatch designs suit everything from sleek performance cruisers to long-haul bluewater sailboats. Below the waterline (or rather, in the engine room and at the helm), Lewmar's <a href="/m/7429/c/thrusters">bow and stern thrusters</a> — including the Gen 2 series — provide smooth, powerful maneuvering assistance, making tight berths and marina approaches manageable even in challenging conditions.</p><p>The brand's <a href="/m/7429/c/anchoring">anchoring range</a> includes the well-regarded Delta, Claw, and DTX anchor designs. The Claw anchor, inspired by hardware used to secure North Sea oil rigs, is renowned for its reliable hold across a wide variety of seabed types and its easy stowage. The DTX bridges the performance gap between galvanized and stainless-steel options, offering a high-specification anchor at a more accessible price point.</p><h3>Racing Pedigree and Real-World Reliability</h3><p>Lewmar's products have been tested in some of the world's most demanding sailing environments. Lewmar winch systems appeared on both competing vessels at the historic 1983 America's Cup, and Lewmar hardware was fitted to Gipsy Moth IV when Francis Chichester completed his legendary solo circumnavigation. This racing and expedition heritage isn't just history — it directly informs the engineering standards that Lewmar applies to every product in its lineup today, from entry-level windlass kits to carbon-fiber winches built for superyachts.</p><p>For sailors, powerboat owners, and professional boat builders alike, Lewmar represents a trusted partner for on-deck hardware, anchoring solutions, and boat-handling systems that perform when it matters most.</p>

Part Number

39670050
05/28/2036 9:29 AM
Sale Price

$1,166.71

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Product Details

The Lewmar 39670050 Ocean Hatch is a premium marine deck hatch featuring traditional high-profile styling and rugged construction designed to protect against harsh marine elements. With its classic design, this hatch has been trusted on thousands of vessels worldwide for decades of reliable performance.

Specifications:

  • Overall dimensions: 27-5/16" L x 27-5/16" W x 1-11/16" H (694mm x 694mm)
  • Cut-out measurement: 24-11/16" x 24-11/16" (627mm x 627mm)
  • Flat base design for mounting on flat surfaces
  • Anodized aluminum frame with grey acrylic lens
  • 1/2" thick shock-resistant acrylic (Plexiglas) bonded lens
  • EPDM seal for completely watertight structure
  • Deck thickness compatibility: 1" to 2-13/16" minimum/maximum (25mm to 72mm)

Key Features:

  • Friction levers hold the lid open in any position up to 95 degrees without support arms
  • Hatch opens 180 degrees for easy access
  • Internal and external lockable handles for added security
  • External hinges attached outside the frame to prevent leakage
  • High lower-frame breakwater reduces water infiltration when hatch is open
  • CE certified for deck, coach roof, cockpit, and transom installations (tested to 2 psi)
  • Corrosion-resistant anodized aluminum construction
  • Compatible with Lewmar standard cut-outs

Installation Notes:

  • Requires M6/1/4" fasteners for hinge section
  • Requires 5mm CSK screw No.10 UNC 2 BA for lower frame
  • Flat base hatches are not compatible with trim kits or roller shades
  • Maximum surface tolerance: +/- 1mm
  • Mounting hardware not included

Manufactured in the UK with a 3-year warranty, this Size 70 Ocean Hatch delivers the quality and durability that Lewmar has been known for since 1946.

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