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1. HOW TO INSTALL THE SYSTEM
How to install the stays (anti-vibration and anti-shock measures)
This measure must be done after installing the hull unit to prevent damage from
vibration or impact shock to the transducer. Stays should be as sturdy as possible
(75759 mm minimum recommended). Install a minimum of two stays, one in the aft
direction, one in the fore direction. Where possible install two more stays (one in the
port and one in the starboard direction), making a total of four stays. Where the hull
units is installed off center from the bow-stern line, install the stays at right angles with
the bow mark on the hull unit.
Bow mark
Recommended stay installation
Where horizontal installation of the stays is
not possible, install the stays in a diagonal
manner to reduce vibration in the hull unit. In-
stall the upper stays (attached to the top of the
hull unit) in opposing directions (one facing
fore, one facing aft), then attach the stays to
ceiling beams. This reduces axial movement.
The side stays should be installed and at-
tached to the hull framework.
Shackle holes
When transporting the hull unit in a horizontal manner, use
the shackle holes shown in the figure to the right. Attach
shackles to the holes, then use block and tackle or chain,
attached to the shackles, to move the hull unit.
Note: Once the hull unit is set in place, remove the shack-
les and ropes. Also, when removing the metal fittings on
the cables wrapped around the hull unit, remove the ca-
bles.
1-6
Stay
Eyebolt
Hull Unit
Stand
Ceiling beam
Stays installed diagonally
have their effectiveness
reduced. Install stays as close
to horizontal as possible.
Stay
90°
Secured to ceiling beams
Stay
45º or less
Bow mark
Secured to ship's hull
framework
Non-horizontal stay installation
Shackle
holes
Shackle
holes
Stay
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