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A porthole consists of at least two structural components and is, in its simplest form, similar to any other type of window in design and purpose. The porthole is primarily a circular glass disk, known as a 'portlight', encased in a metal frame that is bolted securely into the side of a ship's hull.
Feb 10, 2022 · Learn what ship portholes are, how they are constructed, and why they are round. Find out the materials, glass, and weight of ship portholes and their history and uses.
Oct 13, 2023 · Learn what a porthole window is, how it serves natural lighting, ventilation, safety and navigation on ships and boats. Discover the different types, materials and history of porthole windows in the maritime world.
A porthole is a small, usually round window in the side of a ship or aircraft. Learn how to use this word in sentences, see synonyms and antonyms, and find out how to say it in different languages.
Learn the meaning of porthole, an opening with a cover or closure in the side of a ship or aircraft, or a port through which to shoot. See examples, word history, and related words.
PORTHOLE meaning: 1. a small, usually round window in the side of a ship or aircraft 2. a small, usually round window…. Learn more.
Porthole, port light, sidescuttle. A circular opening in the ship side to provide light and ventilation. A hinged metal cover or deadlight can be clamped over to secure in heavy weather. Sidescuttles are divided into three types: Type A (Heavy), type B (Medium) and type C (Light).
