Purse seine

When you select a purse seine, the right side of the dialog box changes to accept the purse parameters.

• For the selected gear, select a depth value. The depth value defines how deep the gear will sink when it is fully deployed.
• Select the length of the fishing gear.
• Set throw side to Port or Starboard.
• Set the sink rate. The sink rate defines how fast the gear will sink.

For fishing with a purse seine, the intended process follows:

1. To start the process:

   • Press Gear on the Operating Panel. — or:
   • Right-click and select Show Gear Symbol on the shortcut menu.

   This places a circle marker in the view. The size and location of the marker is defined by the choices you have made with the Fishing Gear function. Until you proceed, the marker follows the movements of the vessel by keeping its relative location to the bow. This allows you to position your vessel in the best possible location before you shoot the purse seine.

2. When you shoot the net:

   • Press Gear on the Operating Panel. — or:
   • Right-click and select Place Gear Symbol on the shortcut menu.

   The first timer starts when you select Place Gear Symbol.

   A rectangular marker is placed in the view, and marks the position where the purse seine was shot. The circular marker is disconnected from the vessel movements, and acts as a guideline for your manoeuvring. The history line shows the movements of your vessel. Since the ST90 system knows the length of your net, it places a second marker on this line when half the length has been spent. When the entire net has been spent, a third rectangular marker is shown. In this phase the Fishing Gear function is disabled.

   The first timer stops when the progress bar reads 100%. This action starts the second timer, which stops when you select Remove Gear Symbol.

3. When the process is finalized:

   • Press Gear on the Operating Panel. — or:
   • Right-click and select Remove Gear Symbol on the shortcut menu to delete the markers from the view.

Trawl

When you select a single or dual trawl, the right side of the dialog box changes to accept the trawl parameters.

Related functionality

Fishing Gear function

The Fishing Gear function allows you to define the size of your trawl or purse seine. Accurate fishing gear properties are important for the following functionality:

• Circle Marker
• Gear Symbol
• Catch view
• Vertical view

Open this function from the Setup menu.

Add Fishing Gear dialog box

By defining the type of fishing gear you are using, the ST90 system may provide more accurate visual presentations. Use the Fishing Gear Setup dialog box to change the fishing gear properties to match your own equipment. Use the Add Fishing Gear to add new equipment to your fishing gear list.

In the Add Fishing Gear dialog box, select gear type and gear name.