BOMAR hatches and portlights

Bomar boat hatches represent an excellent choice for those seeking long-lasting durability and a watertight seal. Available in a variety of shapes, including oval and elliptical, and in different sizes, they adapt perfectly to any type of boat, from small sailboats to dinghies. It is crucial to accurately verify the existing hole diameter and the hull thickness to ensure a correct and trouble-free installation. In addition to boat portholes, we also offer a range of marine hatches, essential for facilitating the inspection of technical compartments, tanks, and other hidden areas of the boat.

The choice of material is a crucial aspect: the use of AISI 316 stainless steel ensures superior resistance to corrosion caused by the marine environment, while the high-quality rubber gasket guarantees an optimal watertight seal, protecting the interior of the boat from water and the elements. Before purchasing, always verify the presence of CE certifications, a fundamental requirement for navigating in compliance with safety regulations.

In our catalog, you will also find a selection of replacement parts for Bomar boat portholes and hatches, including handles, hinges, gaskets, and lenses. Don't compromise the seal and safety of your hatch by using non-original spare parts. Rely on the quality and reliability of Bomar parts for effective and long-lasting maintenance.

The Advice from the Basile Workshop

A leaking boat porthole is a problem that needs to be resolved promptly. The infiltration of saltwater can cause significant damage to onboard electronics and promote mold growth, compromising health and comfort on board. Before proceeding with the complete replacement of the boat hatch, carefully check if it is sufficient to replace the gasket. Often, this proves to be the quickest and most economical solution to solve the problem.

• Fast and secure shipping throughout Italy thanks to our express courier.


• Official Bomar warranty on all new products purchased.


• Specialized pre- and post-sales technical assistance to guide you in your choice and installation.


• Availability of original spare parts in stock for quick replacement.

To ensure a perfect and lasting seal, we recommend combining your new boat portholes with a high-quality marine sealant. You can find a selection of marine sealants and adhesives in the dedicated section of our site.

What products should I use to clean boat portholes without damaging the plastic or steel?

For cleaning boat portholes, use neutral detergents specifically designed for nautical use. Avoid aggressive or abrasive products that could scratch the plastic or dull the stainless steel. For steel, you can use a specific polish to remove stains and streaks.

How can I figure out the right Bomar boat hatch model for my boat?

Check the dimensions of the existing hole on your boat (outer and inner diameter). Check the thickness of the hull. Measure the clear opening (the visible part of the boat porthole). Finally, consider the shape (oval, elliptical) and the type of opening (fixed, opening). Compare this data with the technical specifications of our Bomar boat hatches.

Where can I find replacement parts for my Bomar boat porthole?

In our section dedicated to nautical spare parts, you will find original Bomar replacement gaskets, handles, hinges, and lenses. If you don't find the spare part you are looking for, contact us with the model of your boat hatch: we will help you identify it.

How can I prevent condensation from forming inside the boat portholes?

Condensation inside boat portholes is a common phenomenon, especially in conditions of high humidity. To prevent it, make sure the boat is well ventilated. You can also use specific anti-condensation products or install a small dehumidifier on board.

How often is it advisable to replace the gaskets on boat portholes?

The frequency with which you replace the gaskets on boat portholes depends on the environmental conditions and the frequency of use of the boat. In general, it is advisable to check the gaskets at least once a year and replace them if they show signs of wear, cracks, or hardening. A gasket in good condition guarantees an optimal watertight seal.

Can I install a Bomar boat hatch myself, or is professional intervention necessary?

The installation of a Bomar boat hatch can be carried out by yourself if you have the necessary skills and tools. However, if you do not have experience in this type of work, it is advisable to contact a professional to avoid errors that could compromise the watertight seal and safety of the boat.

What are the advantages of an opening boat porthole compared to a fixed boat porthole?

Opening boat portholes offer the advantage of being able to ventilate the interior of the boat, improving comfort and reducing the formation of humidity. They are particularly useful in hot and humid climates. Fixed boat portholes, on the other hand, are more economical and offer greater structural resistance.

What products should I use to clean boat portholes without damaging the plastic or steel?

For cleaning boat portholes, use neutral detergents specifically designed for nautical use. Avoid aggressive or abrasive products that could scratch the plastic or dull the stainless steel. For steel, you can use a specific polish to remove stains and streaks.

How can I figure out the right Bomar boat hatch model for my boat?

Check the dimensions of the existing hole on your boat (outer and inner diameter). Check the thickness of the hull. Measure the clear opening (the visible part of the boat porthole). Finally, consider the shape (oval, elliptical) and the type of opening (fixed, opening). Compare this data with the technical specifications of our Bomar boat hatches.

Where can I find replacement parts for my Bomar boat porthole?

In our section dedicated to nautical spare parts, you will find original Bomar replacement gaskets, handles, hinges, and lenses. If you don't find the spare part you are looking for, contact us with the model of your boat hatch: we will help you identify it.

How can I prevent condensation from forming inside the boat portholes?

Condensation inside boat portholes is a common phenomenon, especially in conditions of high humidity. To prevent it, make sure the boat is well ventilated. You can also use specific anti-condensation products or install a small dehumidifier on board.

How often is it advisable to replace the gaskets on boat portholes?

The frequency with which you replace the gaskets on boat portholes depends on the environmental conditions and the frequency of use of the boat. In general, it is advisable to check the gaskets at least once a year and replace them if they show signs of wear, cracks, or hardening. A gasket in good condition guarantees an optimal watertight seal.

Can I install a Bomar boat hatch myself, or is professional intervention necessary?

The installation of a Bomar boat hatch can be carried out by yourself if you have the necessary skills and tools. However, if you do not have experience in this type of work, it is advisable to contact a professional to avoid errors that could compromise the watertight seal and safety of the boat.

What are the advantages of an opening boat porthole compared to a fixed boat porthole?

Opening boat portholes offer the advantage of being able to ventilate the interior of the boat, improving comfort and reducing the formation of humidity. They are particularly useful in hot and humid climates. Fixed boat portholes, on the other hand, are more economical and offer greater structural resistance.