MAQ Sonar Sea-Chest Installation References
Approvals:
Sea-Chest installations must be approved on a case-by-case basis with regard to the vessel’s national
registry and corresponding maritime authority. The ship owner and shipyard performing the installation
are responsible for obtaining installation approval.
Dry Dock:
Ensure proper clearance under Sea-Chest for Sonar installation. Avoid placing supporting blocks in the
area of the Sea-Chest. Ensure you record the position of the Sea-Chest for future reference. Sonar have
been installed in existing Sea-Chest without placing the vessel in Dry Dock but this is at the discretion of
the vessel owners and Dealers.
Sea-Chest:
MAQ Sonar is one of the simplest and fastest Omni Sonar to install. This Sonar was designed to fit on
vessels with existing Sea-Chests and can be installed in as little as one day.
The Sea-Chest is probably the most important consideration when installing Sonar. For best performance
the transducer must extend properly out of the Sea-Chest in order that the active face is fully exposed
(Short Stroke). When it is extended farther below the keel it will not be exposed to air bubbles which
may be driven under the vessel which will reduce Sonar performance (Long Stroke). Many vessels do not
have an issue with air bubbles from the Bow of the vessel and short stroke installations are more than
adequate.
The recommended location for the Sea-Chest is 1/3 of the vessel length from the Bow and as close to the
keel as possible. For assistance Please contact the Factory
tech@maqsonar.com
.
There are several other
considerations for locating a Sea-
Chest. When the vessel is already
equipped with Sonar these Sonar
may extend in front of or next to
the MAQ. If the equipment is in the
line of sight of the MAQ they will
create a shadow or block the
detection of the Sonar in this
direction.
Although MAQ Sonar will fit in any 8” (90KHz and 60KHz) or 18” (22KHz) Sea-Chest, Sea-Chest extensions
may have to be added to accommodate the MAQ.
It is critical that the I.D. of a Sea-Chest extension
matches the original Sea-Chest I.D. and that the extension is aligned properly with the original Sea-
Chest.
Summary of Contents for 22KHz
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Page 24: ...GM4501 60 90kHz Transducer Pipe with Flange KA22005 22kHz Transducer Pipe with Flange 12 ...
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