Stationary boat

1 minute ago

Now

Time

When a boat is stationary, all bottom echoes will come from the same small area of bottom. This will produce a flat bottom trace on the screen.

The appearance of the Sonar and Zoom screens can be changed to suit individual preferences.

Note: Times indicated are for illustration only.

4-2 Fish detection and display

Where to find fish

Underwater features like reefs, wrecks and rocky outcrops attract fish. Use the sonar to find these features, then look for fish by passing over the feature slowly several times using the Zoom display (see section 5-2 Sonar Zoom display). If there is a current, the fish will often be found downstream of the feature.

When fishing with the Explorer 435 and Explorer 438 with the Fish symbols Off, a weak fuzzy band may appear between the bottom trace and surface. This might indicate a thermocline - a rapid change in water temperature, such as the edge of a warm or cold current. The temperature difference can form a barrier which the fish may not swim through. In fresh water, fish often collect around a thermocline.

Fish symbols

The fish symbol can be customized or switched off altogether so that the echoes are not converted to fish symbols on the display. See section 3-2 Setup > Sonar. The differences between Fish symbol On and Off are:

Fish symbols On

Using Northstar’s SBN sonar technology the fishfinder analyses all echoes and eliminates most false signals and clutter so that remaining targets are most likely fish. Depending on the strength of

the remaining echoes, they are displayed as either small, medium or large fish symbols

-with or without depth. While the SBN processing is very sophisticated it is not

foolproof - there will be times when the fishfinder will not be able to differentiate between large air bubbles, rubbish containing air, fishing floats etc. and fish.

The following picture shows the Sonar display with the Fish symbol: On + depth:

Fish symbol Off

For experienced users this always provides the best information as every echo is displayed, whether it is surface clutter, a thermocline or a fish.

The picture in section 4-1 Interpreting the display, shows the Sonar display with the Fish symbols Off. The fish appear as arches.

Northstar Explorer 435/438 Installation and Operation Manual

19

Page 18 Page 20
Page 19
Image 19
NorthStar Navigation 435 Stationary boat, Fish detection and display Where to find fish, Fish symbols On, Fish symbol Off
Page 18 Page 20

435, 438 specifications

NorthStar Navigation 438,435 is a cutting-edge navigation solution designed to enhance maritime and aerial operations with advanced technology and user-friendly features. This state-of-the-art equipment focuses on delivering precision, reliability, and efficiency, making it an essential tool for professionals in various fields including marine transportation, aviation, and logistics.

One of the main features of the NorthStar Navigation 438,435 is its high-accuracy positioning capability. Utilizing multiple GNSS (Global Navigation Satellite System) signals, including GPS, GLONASS, Galileo, and BeiDou, the system can provide a positioning accuracy of up to 10 centimeters in real-time. This ensures that users can navigate confidently in challenging environments, whether at sea or in the air.

The navigation device also boasts robust integration capabilities with other onboard systems. It supports various communication protocols, allowing seamless interfacing with radar, AIS (Automatic Identification System), and autopilot systems. This integrated approach facilitates comprehensive situational awareness, enabling operators to make informed decisions swiftly.

Moreover, the NorthStar Navigation 438,435 features an intuitive user interface designed for ease of use. The touchscreen display provides clear visuals and customizable layouts, allowing users to tailor the information presented to their specific needs. With multiple language support and user-friendly controls, the system caters to diverse operators across different geographic regions.

Another defining characteristic of the NorthStar Navigation 438,435 is its resilience in harsh conditions. Built to withstand severe weather, it meets stringent marine and aviation industry standards for durability and reliability. The system is both waterproof and shock-resistant, ensuring optimal performance even in extreme environments.

In addition to its hardware capabilities, the NorthStar Navigation 438,435 incorporates advanced software features such as real-time route planning and environmental monitoring. Users can analyze weather patterns and potential hazards along their route, optimizing travel time and enhancing safety.

Overall, the NorthStar Navigation 438,435 stands as a reliable, feature-rich navigation solution that harmonizes advanced technology with user-centric design. Its focus on accuracy, integration, ease of use, and durability makes it an indispensable tool for navigating the complexities of modern transportation, ensuring successful missions across diverse maritime and aerial operations.
Top Page Image Contents