Glass
In maritime context, glass refers to a navigational instrument used for measuring the angle between the horizon and celestial bodies such as the sun, moon, and stars. This angle, known as the altitude, is used to determine the ship's position on the earth. The glass consists of a telescope mounted on a graduated arc, which can be adjusted to measure the altitude of the celestial body. The glass is an essential tool for celestial navigation, which is still used by some mariners today, particularly in emergency situations when electronic navigation systems fail.
Your Previous Searches
Random Picks
- Illumination: Illumination refers to the lighting on a vessel, which is essential for safe navigation during periods of reduced visibility. Navigation lights are used to signal the vessel's position, direction of travel, and status to other vessels in th ... Read More >>
- Evacuation: Evacuation is the process of moving people from a dangerous or hazardous area to a safe place. In maritime context, evacuation is an important aspect of ship safety and emergency response planning. It involves the safe and efficient removal ... Read More >>
- Strength-to-weight Ratio: Strength-to-weight ratio is a measure of the strength of a material compared to its weight. In the maritime context, it is an important factor in the design and construction of ships and other marine structures. A high strength-to-weight ra ... Read More >>
Top News
SEAL Team 6 is said to be training for a fight with China over Taiwan. Here's wh...
The role of the elite unit may be limited but not inconsequential. "You don't use a scalpel for a job a hammer can do," a former SEAL said....
News Source: Business Insider on 2024-10-19
The last in-person vote in the US will be cast on the desolate tundra of Alaska'...
On a desolate slab of island tundra on Alaska's Aleutian Islands, a resident of a tiny village called Adak will again become the last American to cast an in-person ballot for president...
News Source: ABC News on 2024-10-19
A historically Black community grapples with lasting impacts after Baltimore bri...
As the dust settled after the deadly collapse of Baltimore’s Francis Scott Key Bridge, residents of Turner Station found themselves facing an uncertain future....
News Source: NBC News on 2024-10-18
These are the biggest challenges facing the US Army in the Pacific, according to...
Soldiers face daunting challenges in navigating the vastness of the Indo-Pacific, where a future war could take place across a range of environments....
News Source: Business Insider on 2024-10-18
Teen kayaker rescued after spending 12 hours treading water and clinging to his ...
A 17-year-old kayaker spent nearly 12 hours treading water and clinging to his kayak Wednesday after becoming separated from his high school paddling group, the U.S....
News Source: NBC News on 2024-10-18