This is an example of our marine radar that we use in our courses.
The radar is one of the most useful pieces of equipment on the boat. It is independent and does not rely on any other systems. It can be used to identify other vessel, it can be used for navigation references, and it can even pick up approaching rain squalls.
Below is our mini radar simulator, in this introductory course, we are only going to cover some of the basic functions of radar operation.
The 
switches on and off the Heading Line that defines the direction of your travel in relation to any detected radar reflections.
The 
adjusts the range increments of the rings in steps. This allows you increased resolution at close range, or maximum visibility at longer range. The correct choice will depend on the situation.
The EBL 
and 
are used to adjust the Electronic Bearing Line (EBL) which can be used to determine the bearing of any reflected echo. The 
indication confirms that EBL monitoring is active. But it can be switched off just by clicking on the on button.
The VRM and are used to adjust the Variable Range Mark (VRM) which is to measure the range to any reflected object. By default, it has been switched off in this simulation, but you can switch it on just be pressing the off button.
This radar has been scaled down to suit a mobile phone screen. A larger representation will be displayed if you view the page on a tablet or computer.
The screen on your device is too small to display this simulator, please try viewing in landscape, or try another device.
RR
2 NM
EBL
000°
VRM
0.0 NM
HDG 000°
EBL
VRM
FTC
Clutter
Search and Rescue Transponders (SARTs) also take advantage of the radar systems to help people in distress that monitors for any active radar signal, and on detection, they will respond by sending out a radar pulse that can be seen on the display. The SARTs are displayed as a series of 12 dots that extend away from the centre of the radar with the first dot that is displayed being the location of the SART.
These units are perfect when you are on a liferaft or boat that may not normally generate a radar reflection, and the 12 dots are universally recognised as indicating a vessel in distress. To see the effect, press the button below to activate the SART, and use the EBL and VRM controls to find the location of the SART.
You should get a bearing of about 075° to the current vessel heading, and at a range of 6.9 nautical miles.