Lewmar 10-11/16" x 16-7/16" Coastline hatch. This hatch is no longer available but was used on many Catalinas prior to 1999. See "More images:" below showing the characteristics of the Coastline hatches.
• Catalina 36, 2 per boat ('91-'98)
• Catalina 42, 2 per boat ('91-'98)
There may be other instances where this hatch is used. It is also possible that not every boat described above used this hatch. Please use the dimensions above and the photos below to verify which hatch is actually installed on your boat.
For Lewmar Coastline hatches manufactured from 1991 through 1999 (Catalina used this series of hatch as early as 1991. It is also likely Catalina installed this Coastline hatch inventory in boats until sometime in 1998). This hatch can be identified by a single (not split) frame that cannot be disassembled in two halves. The gasket has a trapezoidal cross section and is glued onto the bottom of the aluminum frame surrounding the lens.
• Outside of lid: 272mm x 417mm (about 10-11/16" x 16-7/16")
• Cut out size: 202mm x 347mm (about 7-15/16" x 13-5/8")
• Lens thickness: 8mm (about 5/16")
Since Lewmar is a British company, all of their products are metric. The fractional dimensions provided are the nearest equivalents.
"Coastline" model hatches typically have the name "Coastline" stamped into the lens. In addition the Coastline hatches have a short lip on the outside edge of the hatch frame. Use these characteristics and the additional photos at the left for verification as other Lewmar hatch models use different gaskets. Lewmar Size 20 Coastline