Fitting log and speed

Tony Davies installs depth, speed and compass instruments

Tony Davies shows how to fit a NASA log, speed and compass

The depth sounder and speed log are two of the most fundamental instruments that any boat with seagoing pretensions should have.

They’re not difficult to install providing care is taken and it’s remembered that at least one of them will require making a hole in the bottom of the boat – not something that’s to be undertaken lightly!

The NASA Clipper range is equal in appearance to anything on the market and with extremely competitive prices. And a phone call to the company will always result in a conversation with a human being – something that is becoming increasingly rare.

Here we’re fitting depth, speed and compass instruments to a classic Coronet 21 motorboat, which had never been fitted with permanently-installed depth and speed instruments before as had it spent much of its life on a river. It was an ideal candidate for an instrumental make-over including the Clipper electronic compass!

Time Taken: 2 Days Skill Level: Intermediate – you’ll need the confidence to make a hole in the boat! Tools Required: drill, bits, hole saw, jigsaw, screwdrivers, hammer, wire cutter, crimp tool. Prices: Clipper Compass: £194.76 Clipper Depth: £139.96...