The heaviness of the ship’s portholes also ensures that no damage is caused at any time on the boat. They offer resistance not only from sunlight but also from sea and rainwater. Ship portholes are generally because of the durability factor. Hence, the watertight glass cover protects the ship windows from breaking or damage.Ī ship’s porthole measures around two feet in diameter, while its weight can go up to around 100 pounds. The glass is put in a metal cover or steel frame with a shaft or screw to keep it firm. Brass portholes and bronze remain effective for a longer time. Materials such as brass and bronze are preferred over iron and steel because iron rusts because of seawater, and steel bends after a certain period. This process is called tempering, providing the glass does not break or shatter. Then this mixture is laid on top of a melting tin, ensuring that the proper shape of the glass is achieved. The process further involves constantly re-heating the mixture in huge furnaces so that the glass reaches its appropriate thickness. To make the glass, a mixture of silica, lime and ash is mixed, heated and cooled until the right consistency of glass is achieved. Making glass is known as sand-casting silica sand is the primary material for this process. The glass used in the portholes is compulsorily made involving sand. The materials used for building ship portholes are stainless steel, aluminium, brass, bronze, and iron. However, later on, portholes came to be built on every room and cabin on the ship. This construction pattern immensely helped the people working in these areas to work continuously for long hours. This allowed light and fresh air to enter those parts. Representation Image – Photograph by Flavio MestrovichĪ porthole was initially constructed to be a window in those areas of the ship where airing was a significant problem. For this, the height of the portholes is strategically decided, and one end of the portholes is hinged. The portholes are designed so that when a ship cruises into the middle of the seas, one can get the best possible ocean view from the ship’s porthole. They have retained their circular form and are unique compared to windows in other means of transportation. Portholes have been a part of ships since the beginning. What are the materials used for making portholes? These examples are programmatically compiled from various online sources to illustrate current usage of the word 'portal.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Ryan Kartje, Los Angeles Times, 20 Apr. ![]() 2023 Reserve offensive tackle Courtland Ford, who started 12 games over the past three seasons, entered the NCAA transfer portal, leaving the line lighter at tackle and guard. Adam Lichtenstein, Sun Sentinel, 20 Apr. 2023 Additionally, forward Anthony Walker, center Favour Aire, forward Danilo Jovanovich, guard Harlond Beverly and forward Thomas Oosterbroek have reportedly entered the transfer portal. Edgar Thompson, Orlando Sentinel, 10 Apr. 2023 Florida landed 7-foot-1 shot blocker Micah Handlogten Monday as coach Todd Golden continued to remake the Gators through the transfer portal. 2023 The moments following the stabbing attack were captured on surveillance video and in a 911 call to authorities, according to a local Bay Area news portal. Scott Horner, The Indianapolis Star, 18 Apr. 2023 Purdue basketball coach Matt Painter joined JMV on Tuesday afternoon to discuss the end of the Boilermakers' season, player movement, the transfer portal, and name image and likeness. 2023 Their efforts included linking out to a telehealth portal, providing ways to text directly with medical providers, and offering appointment booking through messaging. Chris Solari, Detroit Free Press, 30 Apr. Scott Springer, The Enquirer, Sunday was the final day of the spring window for football players to enter the portal. Noun Schools have no obligation to take back a player that has entered the portal.
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