I've sailed with a Navik (great for boats 30') and Autohelm 3000 and
Navico (now Simrad) PH500 hydraulic below deck pilots.

- The Navik was quiet, efficient and did pretty well, except in big
quartering seas where it steered an S-course. No power required of
course and fairly

- The Autohelm 3000 computer case sealing was rudimentary at best.
Took it apart a few times to find salt crystals inside. Did fine,
even in big quartering seas. We had hydraulic steering with ~4.5
turns lock to lock, which was

- the hydraulic one was fast and efficient but used a lot of power

Evan Gatehouse