The ST60 Tridata is about the cheapest way to get two important pieces of navigation gear into your kit - dept and speed. IIRC, the kit comes with the sensors, thruhulls, and instructions. You could go with dedicated instruments but I think the cost would be higher. FWIW, I'm planning on installing 2 Tridata displays in case one of them fails, but then I'm going offshore.
Capt. Douglas Abbott
USCG/MCA IV/C.I./M.I. 500-ton Oceans
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