Doc. P/N:
WSP-009-008
Version: V1.3
Issue Date:
April 2014
48
7.2
Ship Setup Tab
7.2.1 General
General settings provide:
►
Vessel Information
: Vessel’s name, country and home port may optionally be entered here. This
will be recorded inside any raw data recordings.
►
WASSP Hardware Settings
: The Transducer Serial Number and BTxR Serial Number are filled in at
time of installation. These should not be changed by an operator. The BTxR Versions are reported
from the BTxR for diagnostic purposes.
►
Device Settings
: The three sensor types required for accurate profiling can be selected from
drop down lists. Select the appropriate installed sensor for each of the sensor types. The
advantages of having correctly selected sensors are that you can compensate for pitch (and
possibly heave) as well. To make corrections using the SC30’s Pitch, Roll and Heave values, select
the appropriate check boxes.
7.2.2 Offsets
Offsets are configured during the installation and commissioning of the WASSP system. See “8.1.1
Commissioning Step 1: Ship Measurements” on page 37 of the Installation Manual for more
information.
►
Transducer Heave Compensation
: This check box should be selected if the X, Y, and Z offsets
have been recorded AND a motion sensor is configured. This settings enables the system to
compensate for relative heave at different points on the vessel generated by the vessel pitching
and rolling.
7.2.3 Sound Speed
The
Sound Speed
sub-tab allows you to set surface speed correction settings for fresh and sea water.
Valid values for both sea and fresh water range between 1000 and 2000 m/s.
Knowing the temperature gives a close approximation for the sound speed. In
Manual
mode the
Surface Sound Speed
can be modified directly or calculated from temperature given a Salinity value.
Convex profile
INCREASE
sound speed value
Seafloor Profile
Seafloor Profile
Concave profile
DECREASE
sound speed value
s
alinity
The default value for the
salinity of sea water is 35
. This value should not be changed unless the
actual salinity of the surrounding water is known. If fishing in
fresh water
, the value should be set to
1
.
Clicking on the
Calculate
button will re-calculate the Surface Sound Speed value based on the
Salinity
and
Surface Temperature
values.
nmea t
emperature
If
Use NMEA Temp
is selected, the WASSP software will use NMEA temperature data from an external
temperature sensor. This information is shown adjacent to this option and will be reported in the
“Surface Temperature” window with any “Temperature offset” added to correct for any error in the
external temperature sensor.
Figure 28. Sound Speed correction
