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User Manual
8300 MkII Sound Reception System
2 System Description
A Sound Reception System is an acoustical electronic navigational aid that enables an individual to hear sound signals from
other ships like foghorns when standing inside a totally enclosed bridge space, in order to perform the lookout function as
required according to the International Regulations for Preventing Collisions at Sea, 1972.
The system works by listening and detecting the direction of a foghorn. The 8300 MkII system is always listening for sounds
on the outside of the ship and will only play back and display sounds once a horn has been detected. The vessel's own horn
can be suppressed by closing a closing contact on the 8300 MkII system, which will disable detection for the duration it is held
closed.
Figure 3: 8300 MkII Sound Reception System
