National Marine Electronics Association, and it has long been the global standard for networking marine instruments. ‘Many of our customers are end users and boat enthusiasts, with no formal certifications or installer training.’ What is NMEA? ‘Replacing legacy NMEA 0183 instruments with newer NMEA 2000 devices can be a very expensive process, so getting 0183 instruments communicating with N2K devices is a great way of completing your boat’s network,’ confirms Justin Cohen of industry-leading networker Actisense. Luckily it can be simple to convert between the two thanks to a range of networking add-ons. The problem arises because they ‘speak’ different languages: modern equipment uses the newer NMEA 2000 (N2K) data standard, whereas older instruments tend to use the slower NMEA 0183 protocol, SeaTalk or even analogue. In situ antennae, like those the project team built, can detect and record tag codes 24 hours a day, 7 days a week.If you want to add in up-to-date instruments, you don’t need to replace the whole network. PIT tags (passive integrated transponders) are an electric tag that can be detected and decoded by either a hand-held PIT tag reader or by an in situ antenna. When the field stations were in place and dates set, the fish were PIT tagged. Once delivered, the components were assembled to create solar powered antenna stations. Days in the field consisted of donning wet suits, pulling supply boats over oyster beds and walking them through swamps and mangrove tunnels, passing the gear and parts out of the water and over the jutting mangrove roots. Emily also participated in the actual construction of the sensor/transmitter stations deployed in the field. The first part of the process involved the preliminary design of the operating elements of the experiment and ordering all of the tools, structural materials, batteries, solar panels, transmitters and tagging equipment, finalizing the design and dates for deployment and pre-fabricating all of the antennas and parts we would need in the field. Setting up the platform for the solar panel.
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