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LNG ships are designed for safe operation in accordance with international
marine classification standards, U.S. Coast Guard and international regulations.
These rules have been developed to minimize the risk of operation, and specify
the vessel and cargo tank arrangements, the types and thickness of the hull
and cargo system materials, and the types of monitoring, safety and alarm systems,
including requirements for back-up systems, Industry standards, codes, training,
inspections and operating procedures as well as government regulations are in
place for the safe design, construction and operation of ships. All of the ship's
crew must be certified for LNG operations.
LNG ships are designed with double hulls with two layers of steel, each approximately
3/4 inch thick. The space between the steel hulls is approximately 10 feet
wide on the sides and approximately 10 feet on the bottom. The cargo tanks
are located away from the ship's hull to avoid cargo tank damage.
Gas
detectors and safety alarms are located between the steel hulls to continuously
monitor for cargo leaks.
LNG ships have sailed approximately 50,000 voyages worldwide, covering nearly 130
million miles-all without major accidents or safety problems, either in port or at sea.
The U.S. Coast Guard specifies and enforces safety and security measures for
LNG ships while they are in transit and while at the dock in the United States.
The U.S. Coast Guard
must approve all LNG ships for entry into United States ports and run a security
screening of the ship's crew prior to arrival. A local pilot navigates the
LNG ship
from
the sea to the terminal, and tug boats are connected to escort the LNG
ship to provide assistance in the event of any difficulty. A U.S. Coast Guard
security
vessel
enforces safety and security zones.
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