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Marine Instruments
The numbers every helm wants in view. This collection covers the whole instrument side of the boat: depth sounders and forward-looking depth instruments, speed logs and paddle wheels, masthead wind systems from vane and cup units to wireless, electronic compasses, complete system packs and multifunction displays, the transducers and sensors that feed them, and the suncovers that stop UV ageing a display before its time.
Two things decide what to buy. First the network: NMEA 2000 has made mixed-brand systems workable, so what matters is which protocol your existing kit speaks and what a converter would cost. Second the sensor - instruments are only as good as the transducer feeding them, and a tired paddle wheel or a masthead unit full of salt will make a new display look faulty. Describe what is already on the boat and we will work out the shortest route to what you want.
Frequently asked questions
What instruments does a cruising boat actually need?
Depth first - it is the one instrument that prevents accidents daily - then boat speed, and wind if you sail rather than motor. A depth and speed duet covers the essentials in one display; wind earns its place the moment you start trimming sails properly rather than by eye.
Can I mix instrument brands on one boat?
On an NMEA 2000 backbone, generally yes - any certified device can join and share data with any display. Older analogue sensors need a converter such as Raymarine's iTC-5 to join a digital network. Check the output of the transducer against the input of the display before buying either.
My instrument readings have gone erratic - display or sensor?
Nearly always the sensor or its connection. A fouled paddle wheel, a masthead unit full of salt or a corroded plug behind the panel accounts for most faults. Clean the transducer, check the connector and only then suspect the display - which is the expensive half.
