Kongsberg Simrad MF90, Installation Manual

Page: 123 / 426

476671/B
121
The other hull unit type available for the MF90
system must be secured in the same manner.
A Mechanical support brackets
B Bulkhead
C Hull Unit
Procedure
1 Locate the two holes provided on the hull
unit gantry.
2 Design, manufacture and mount proper
mechanical support brackets from the top
of the hull unit to the bulkhead.
The dimensions and strength of the
support brackets must be adequate to
prevent vortex induced vibrations.
a Mount the support brackets using bolts.
b Verify that it is possible to remove the support brackets if maintenance is required.
c Verify that the transducer cable is not obstructed by the support brackets.
3 Design, manufacture and mount proper mechanical support brackets from the top
of the mounting flange to the bulkhead.
a Mount the support brackets using two (or more) of the existing mounting flange
bolts.
b Verify that it is possible to remove the support brackets if maintenance is required.
c Verify that the transducer cable is not obstructed by the support brackets.
4 If applicable:
a Do a close visual inspection of the physical properties of the installation trunk and
the way it has been installed.
b Make sure that the installation trunk has been properly braced to the hull plating
and the surrounding hull frames.
c Make sure that the installation trunk has been properly stiffened in both the
fore-and-aft and athwartship directions by means of strengthening knee plates.
Related topics
Installing the hull unit, page 99
Installing the hull unit