Sonic KSE-310 - Calibration Work

II-81
2-16-9 Calibration work
Perform calibration using the calibration ball, according to the following
procedure.
It is recommended that calibration be carried out in a location where the waves
are gentle, there is little suspended matter such as plankton, and the water
depth is about 40 m or more.
2-16-9-1 Preparation
Prepare the necessary items shown in the table below.
Table 2-9 Necessary items for performing calibration work
No
Item
Quantity
Description
1
Fishing rod
3
For biaxial (bait) reels
2
Reel
3
A biaxial (bait) reel around which at least 100 m of
the below-mentioned line can be wound, and which
has an indicator which indicates the distance that the
line is paid out
3
Fishing line to be
wound around reel
100 m
each
A No. 5 or No. 6 PE line which is marked every 1 m
4
Rod holder
3
A holder that can be fixed to the ship, and which can
fix a fishing rod
5
Calibration ball
3
Prepare two 38.1 mm diameter balls.
6
Weight for
calibration ball
2
Prepare a 54.1 mm diameter calibration ball or a
fishing weight of between about 500 g and 1500 g.
7
Fishing line for
calibration ball
30 m
A No. 5 or No. 6 fluorocarbon fishing line for making
a net to hold the calibration ball
8
CTD
1
A CTD which enables the salinity and water
temperature of a CTD, for example, to be observed
9
Rope
2
One for avoiding the bottom of the ship, and one for
lowering the CTD
10
Worker
4
At least two workers are required.