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Stingray Echo Sounder
The NASA Stingray Echo Sounders come in a slimline case with an easy to read extra bright LED display on a 4 inch dial. They both have a dual audible alarms for shallow and deep water which can be set to give two ranges either 1-25 metres or 1-100 metres, and are simplicity itself to operate. They come complete with transducer and stirrup mounting bracket and only require connection to the ships 12v power supply.
Sadly, as some component parts have been increasingly difficult to source this product is no longer in production. Anyone who has one can fit any of our digital depth sounders to the same Stingray depth transducer.
Liquified petroleum gas (LPG) is an invaluable source of energy on many sailing vessels. It should, however, be used with great care. In its gaseous form it is heavier than air and will always collect at the lowest level in a vessel. Any leak of gas, any spillage of liquid could sink to the bilge and, unable to escape, build up to explosive proportions.
The NASA Marine gas detector system warns if the level of LPG rises above 10% of the lowest explosive limit (LEL) giving adequate warning of the need to ventilate the area before a dangerous situation occurs. The system consists of a cabin mounted monitor and a remote sensor. The monitor gives visual and audible warning if gas levels at the sensor rise above 10% LEL and will warn of fault conditions such as damaged cables etc.
The splash proof sensor is supplied with a 5 metre cable and has a test button to check the system right through to the gas sense element. The sense element is user replaceable in the event of contamination. Supplied with power cable.
EX-1 exhaust temperature monitor/alarm
The EX-1 continually displays the exhaust gas temperature in wet exhaust systems giving advanced warning of potential problems.
The EX-1 measures the exhaust gas temperature directly and displays it in degrees centigrade or Fahrenheit. Once the normal working temperature has been established a maximum temperature, a few degrees higher, can be programmed into the EX-1 which will then sound an alarm if that temperature is exceeded.Even a small rise in temperature can indicate a potential problem such as a minor blockage, leak or failing pump which can be corrected before a complete failure occurs.
I just wanted to share with you another great reason for having the EX-1 fitted. Over the last few weeks of using our boat I observed that the running temperature had gone up around 5 degrees or so. Now with using the boat in the winter one would expect the reverse, so it caused me to think more about it. Added to that, when I did use the engine at full revs on load (something I do regularly just as a check) the exhaust alarm went off (it doesn’t normally.) I then observed the seawater tell-tail was more pronounced (the tell-tail feed is off the line between the Jabsco pump and the inlet to the cooler. Hmmm: possible blockage? I removed the impellor and true enough, one of the vanes had come off. On stripping the cooling system (I was already working on the leaking silencer) I found one part of the impellor up against the tube stack, but more importantly, when I removed the hose feeding the tube stack, via a small elbow, I found a larger part of the impellor jammed inside, reducing the flow by as much as 50% and causing s sediment build up behind it, reducing it further. All cleaned out now, but the reason for telling you is that the EX-1 gave me warning before any real damage could have been caused. It is a brilliant piece of kit.
AIS RADAR SART UPGRADE CHIP
This ‘do it yourself’ install chip will enhance your AIS Radar by adding the latest SART function. If a SART (search and rescue transponder) transmission is received the AIS Radar will sound an alarm in the SOS tone. The zoom range is also enhanced by zooming right down to 0.125 nautical miles for easier location of the SART beacon/MOB. Additionally a course over ground pointer can be activated by the user which appears if your vessel is moving at 2 knots or more, this greatly simplifies the interpretation of targets on the screen relative to your own boats heading.
Electromagnetic Log 2 (transducer and data box)
Electromagnetic Log – speed through water – with no moving parts!
The EML-2 electromagnetic speed log measures the boat speed through the water with no moving parts.
Robust and accurate, the sensor generates an alternating magnetic field below the boat and measures the resulting electric field produced by the boat moving through the water.
With excellent linearity and a resolution of 0.1 Knot, over the range 0.2 to 40 Knots, the control box converts the sensor signal to boat speed, trip and total distance and sends it to any compatible NMEA-0183 display.
For a complete solution the EML-2 electromagnetic transducer and controller can be supplied together with either a
EML -3 is a pulse output version of the Electromagnetic Log to suit any previous NASA Marine paddlewheel log including all Target, Clipper Logs and Duet. Also works with Raymarine ST60 Log display.
Click product video below, connected to a Clipper Duet combined Depth and Log. Shown with kind permission of one of our valued beta testers.