Marine Porthole

Marine Porthole

Introduction of Marine Porthole

A marine porthole is a circular window that is found on the exterior of a ship or boat. It is typically made of thick glass or plastic and is set into a metal frame that is secured to the hull of the vessel. Portholes are designed to allow natural light and fresh air into the interior of a ship's cabin or other enclosed spaces, while also providing a means of ventilation. They can be opened or closed depending on weather conditions, and are often equipped with a watertight seal to prevent water from entering the vessel in rough seas. Portholes can be found on a wide range of vessels, from small pleasure boats to large ocean liners.

Features of Marine Porthole

Ventilation: Portholes provide ventilation and fresh air to the interior of the ship, which can be crucial in maintaining a comfortable living environment for crew members.

Natural light: Portholes also allow natural light to enter the ship's cabin, reducing the need for artificial lighting during the daytime and improving the overall aesthetic of the space.

Visibility: Portholes can provide a view of the exterior surroundings, which can be useful for navigation or for observing wildlife or other vessels.

Safety: In the event of an emergency, portholes can provide a means of escape or evacuation from the vessel.

Configuration Selection

parts	material	Pros and Cons
Glass	Toughened glass	The strength is several times higher than that of ordinary glass, the fragile property is improved, and the resistance to rapid cold and heat is higher than that of ordinary glass.
	Normal Glass	The light transmittance of ordinary glass is good, and its surface is smoother than tempered glass, but its strength and safety are worse than that of toughened glass.
Window frame and seat	Q235	Good welding performance, Good low temperature toughness
	LF5 Aluminum	Anti-corrosion, but expensive and not fireproof
	Copper	High strength, high hardness
Storm cover	Q235	Good welding performance, Good low temperature toughness
	LF5 Aluminum	Anti-corrosion, but expensive and not fireproof
	Copper	High strength, high hardness
Seal	Neoprene	Excellent Watertight performance
Options according to user requirements
Parts	Remark	Features
Window Type	Fixed
	Openable（Direction）
Installation Type	Bolt
	Welded

Comparison Difference

Other manufacturer’s low quality marine porthole	HI-SEA high quality marine porthole
1. The glass cuts corners, adopts non-tempered glass, and the glass thickness is thin, the structure is fragile and fragile, and the sharp edge after rupture has caused harm to the human body. 2. The glass window frame adopts the metal structure with high impurity content, the cost is low, and the strength is not up to standard. 3. The window edge sealing material has poor ductility, is easy to deform, and cannot guarantee watertightness. 4. Improper surface treatment of castings and defects such as cracks and pores will affect the service life of portholes.	1. The glass adopts a multi-layer tempered glass structure, which not only has high strength, but also better safety, and has a certain sound insulation function. 2. The material standard refers to GB/T 14413-2008, which conforms to the marine specification 3. After the parts are processed, anti-rust treatment such as hot-dip galvanizing or anodizing is performed. 4. The porthole shall be impacted by water with a pressure of not less than 0.2MPa and there shall be no water droplets on the impacted part. 5. All inspection items for portholes are in compliance with the requirements.

Specifications of Marine Portable

clear size D	D1	D2	D3	D4	h	t	gmax	bolt		Cut out in steel wall
								whorl	qty
φ200	φ245	φ250	φ350	φ310	155	8	50	M12	8	253
φ250	φ295	φ305	φ400	φ364	182	8	47.5	M16	8	308
φ300	φ350	φ360	φ450	φ414	207	10	45	M16	12	363
φ350	φ400	φ410	φ500	φ464	232	12	45	M18	12	413
φ400	φ450	φ460	φ550	φ514	257	12	45	M18	12	463
φ450	φ500	φ510	φ600	φ564	282	15	45	M20	12	513

How to install a marine porthole

Installing a marine porthole requires some technical expertise and should be done by a qualified marine technician or shipwright. Here are some general steps for installing a marine porthole:

Select the location: Choose the location for the porthole based on the vessel's design and intended use. Consider factors such as natural light, ventilation, and accessibility.

Cut the hole: Use a cutting tool to carefully cut the hole for the porthole. The size of the hole should match the size of the porthole frame.

Prepare the area: Remove any debris and clean the area around the hole. Apply a rust inhibitor or other protective coating to the edges of the hole to prevent corrosion.

Install the porthole: Insert the porthole frame into the hole and secure it with screws or bolts.

Test for leaks: Test the porthole for leaks by spraying it with a hose or running water over it. Check for any water penetration or other signs of leakage.

Finish the installation: Install any additional hardware, such as hinges or locks, and finish any trim or cosmetic work around the porthole.

It's important to follow the manufacturer's instructions and any relevant regulations or standards when installing a marine porthole. Improper installation can result in leaks or other safety hazards, so it's best to consult with a qualified professional if you're unsure about any aspect of the installation process.

Picture of Marine Porthole Window