Plastimo Offshore 115 Marine Compass

Full review

The Plastimo Offshore marine compass stands as one of the most trusted navigation instruments among bluewater sailors and powerboaters who demand reliable heading information when electronics fail or simply aren't enough. Built in France with decades of maritime instrument expertise behind it, this compass is designed specifically for offshore passages where accuracy, durability, and legibility under harsh conditions matter more than convenience features. The compass card is filled with a carefully balanced liquid that dampens the pitching and rolling motion of a vessel in rough seas, allowing the helmsman to maintain a steady reference heading even when the boat itself is anything but steady. Its robust housing, available in models suited for bulkhead, binnacle, or flush mounting, reflects the practical needs of offshore cruisers who require an instrument that can be integrated into a variety of cockpit and nav station layouts.

What distinguishes the Plastimo Offshore compass is its oversized, high-contrast card combined with a conical or flat card design that remains easy to read from a distance and at odd viewing angles, a critical feature when crew members are moving around a heeling boat or glancing at the compass while trimming sails. The card is illuminated for night passages, ensuring that watch-standers can confirm their course without needing a handheld flashlight that would otherwise compromise night vision. Many versions of this compass include a built-in compensation system, allowing the user to correct for the magnetic deviation caused by the boat's own electronics, engine, or metal fittings, which is an essential capability for any vessel relying on accurate dead reckoning navigation during extended offshore legs. The compass is also engineered with a wide operating range of angles of heel, meaning it continues to provide a true, undistorted reading even when the boat is sailing hard on the wind or surfing down a swell.

Constructed from UV-resistant, saltwater-tolerant materials, the Plastimo Offshore compass is built to endure continuous exposure to sun, spray, and the corrosive marine environment without clouding, yellowing, or losing calibration over years of service. Its sealed, shock-absorbing design protects the internal fluid and card assembly from the vibration and impacts common on offshore passages, while replaceable components and accessible servicing options extend its working life far beyond disposable electronic alternatives. For sailors who understand that a dependable magnetic compass is the ultimate backup to GPS chartplotters and autopilots, this instrument represents a long-term investment in seamanship and safety. Whether mounted at the helm of a cruising sailboat, a sport fisherman, or a long-range trawler, the Plastimo Offshore compass continues to serve as a fundamental navigation tool, embodying the enduring principle that a boat crossing open water should never depend solely on batteries and satellites to find its way home.