B&G vs Garmin for sailing: choose a complete system

B&G and Garmin both deserve consideration for a cruising yacht. The useful comparison is a supported B&G display, sensors and pilot against a supported Garmin combination that meets the same brief. A company-wide winner hides differences between display generations, controls, charts and existing equipment. This guide makes conditional recommendations from documentation; it does not claim a comparative sailing trial.

#Choose by the job you will repeat

Choose a B&G shortlist if a sailing-focused presentation is central to how the crew navigates and the required instruments, pilot and charts fit the chosen model. Choose a Garmin shortlist if it preserves useful Garmin equipment or the crew prefers the demonstrated GPSMAP workflow and supported accessory plan. Neither choice should depend on the claim that Garmin lacks sailing features: its manual documents laylines using wind input and polar-table options.

Shaded rows contain different values. On a small screen, scroll the table; model names stay visible within it.

The feature references are B&G Zeus S and the Garmin GPSMAP laylines manual. Model names are examples for the shortlist; obtain an Australian part number and written compatibility statement before buying.

#Why the sensor plan matters more than a feature tick

Laylines are a calculated aid. Before judging which screen draws the more convincing line, ask what wind, heading and speed inputs the installation uses, how they are calibrated and what happens when an input is lost. A demonstration in a shop can show controls but cannot prove that the values will be good on your boat.

Record the source for each displayed quantity. During acceptance, compare appropriate independent observations and investigate persistent inconsistencies rather than changing calibration until the picture looks attractive. A performance cruiser that actively uses targets may justify more attention to wind and speed instrumentation than a coastal cruiser whose immediate problem is unreadable depth. Both still need clear chart and position information.

#Worked choice: a 32-foot coastal monohull

Suppose the yacht has functioning standalone depth, a suitable inspected pilot and no networked radar. The owner wants straightforward navigation and occasional club racing. Obtain like-for-like quotes for a compact supported display, local charts, any necessary sensor interfaces, mount, wiring and handover. Keep the existing equipment if it can perform the required jobs safely without an expensive conversion project.

B&G earns the place if the crew finds the sailing screens useful in a demonstration and will use them. Garmin earns it if its workflow is preferred and the complete quote offers better fit for the retained equipment. Avoid spending the installation allowance on a flagship display before checking the 32-foot cockpit and power plan. A readable separate depth instrument can remain more immediately useful than another multifunction page.

#Worked choice: a 50-foot passage boat

For shorthanded offshore use, settle the drive, steering controller, heading requirements and emergency-steering plan first. Then decide which display architecture supports them. Compare helm and protected planning positions, radio access, radar view and the backup that remains usable after a main-system fault. Neither a sailing brand identity nor a long accessory catalogue proves that a specific drive can move the rudder on the loaded boat.

Garmin’s BlueNet compatibility documentation is a reminder to identify network generations and gateways in an upgrade. Apply the same discipline to every B&G component and its supported software. Have the installer show the complete power and data paths. The 50-foot guide provides the functional brief to give both suppliers.

#Ownership questions that can reverse the result

Ask who performs the sea trial, where a failed display is serviced, what configuration records are provided and whether the owner can obtain essential spares locally. Those answers vary by supplier and location; we have not measured one brand’s national support coverage against the other. Ask for terms rather than accepting a general statement that a brand has “better support”.

For a budget refit, compare the total cost of changing charts, mounts and radar as well as the new screen. For a generous budget, add independent capability and crew training before duplicate luxury displays. Finish with a demonstration by the less familiar crew member: find the active route, change a view, identify the depth reference and return the pilot to standby through the approved control. Choose the system that meets the written brief with the fewest unresolved assumptions.