Alfredo Contaldo · video

What this video covers

Removing air bubbles from a marine compass requires removing the unit from the binnacle, accessing the silicone fill plug, and topping off the internal fluid. To begin, unscrew the mounting flange and the backlight housing to extract the compass from the binnacle.0:50 Once removed, detach the magnetic compensation elements located underneath, noting their original orientation to ensure accurate re-calibration later.1:24 Use a multitool or small screwdriver to remove the silicone sealant and the silicone fill plug.2:11 If the internal expansion diaphragm has collapsed due to a vacuum, removing the plug will allow it to return to its original shape.2:29 Use a syringe or a cleaned densimeter to inject new fluid into the fill port, tapping the housing gently to release trapped air bubbles.10:07 After refilling, reseal the plug with fresh silicone.13:12 Before reinstalling the compass, verify its accuracy by performing a DIY compass swing to check for deviations against known cardinal headings.16:20

More from Alfredo Contaldo

Safe Night Sailing: Complete Guide and Practical Tips ⚓✨⛵⚓Sailing Course Ep. 12Sept 2026Sailing from Sardinia to Menorca ⛵ 200 miles beating against the wind ⛵ Sailing Vlog EP.3 ⚓Aug 2026⛵ STUCK by the MAESTRALE in SARDINIA⚓30 knots at anchor - Trekking 🥾 and Snorkeling 🤿🌊 sailing vlogJul 2026From Sicily to the Balearics by way of Sardinia ⛵ 460 miles by sailboat with Maurizio EP. 1Jul 2026

From Alfredo Contaldo — see the channel’s boat, crew, and every analysed video.

The Sailing Directory Newsletter

One email with the fleet's best finds — the moments, boats, and stories worth your watch time. Enter your own address to get your own copy.