Best navigation gear for a 50-foot sailing yacht

This specification assumes a loaded 50-foot cruising monohull, two people on passage and regular overnight or offshore legs. Its priorities are reliable steering, usable information at each watch position and recovery from faults. A larger budget can buy a better installation and more independent capability; it cannot buy immunity from poor source data, fatigue or unsuitable conditions.

#The recommended architecture

Use a helm display sized by viewing distance—often a 12-inch candidate, with a 16-inch option only after checking the pod—and a separate instrument view for depth, heading and wind. A below-decks planning station is useful when it supports the crew’s watch routine. It need not be another large multifunction display: choose between a fixed repeat display, laptop or tablet after deciding what must remain available when the cockpit system fails.

#The pilot is a mechanical project

A 50-foot label does not identify the required ram, pump or controller. Obtain loaded displacement, steering drawings, rudder arrangement, available tiller-arm radius and drive mounting structure. Ask the installer to state the selection basis in writing and to show that the drive, controller, supply and linkage are a supported combination. High electrical capacity does not compensate for a weak bracket or restricted movement.

Raymarine’s drive guidance describes the importance of laden displacement and steering type; its hydraulic selection guide uses ram capacity for pump selection. The broader lesson is to quote the steering installation before choosing a screen package. Keep the pilot’s means of disengagement accessible and practise the documented standby and emergency-steering procedure under supervision. A spare control head does not replace a failed mechanical drive.

#A specific two-station equipment basket

For a 50-foot monohull retaining a suitable pilot and usable VHF, one practical candidate is Axiom+ 12 E70638-00-ANZ at the helm, Axiom+ 9 E70636-00-ANZ at the protected chart table, i70s pack T70216, Quantum 2 T70416 and AIS700 E70476. The dated Australian price table puts those five hardware lines at A$14,265. This is a navigation and traffic-awareness subset, not an installed offshore package.

The larger helm screen earns its place when radar/chart split views are readable from the working position. The smaller protected screen lets the off-watch person inspect the route without changing the helm page. Retain existing calibrated wind/depth instruments instead of buying the i70s pack again if they already do the job; removing that line reduces this particular hardware basket by A$2,569. Retain a compatible working radar for the same reason.

Two displays plus a wired radar require an appropriate RayNet switch and cabling, quoted separately; the Axiom+ screens each have a limited port arrangement. Both displays also need the correct instrument-data connection and their own specified power feeds. The Axiom+ installation manual is the reference for topology. The 10 m radar cables must be checked against the measured mast route. Do not describe this connected pair as independent backup.

If touch-only operation is unsuitable at the exposed helm, compare Axiom 2 Pro S with its documented hybrid controls rather than automatically buying an even larger Axiom+. That changes the price and installation drawing. Raymarine documents the Pro S controls and sailing features. Keep the radar, instrument, chart and pilot requirements fixed when asking for the alternative, so the screen comparison remains meaningful.

#Radar size follows the mounting problem

A compact or larger radome can be sensible on this boat. Check sail clearance, mast loading, cable access, electrical load and exposure limits in the selected manual. An open array is not a reward for owning 50 feet of boat: it needs a justified operational benefit and an engineered mounting location. The quoted maximum radar range is not a promise to detect a small craft at that distance.

A helm with room for two screens may keep radar on one and charts on the other. That is a workflow benefit. The same arrangement can still lose both pictures through a common switch or supply fault. Draw the power and imagery paths before describing it as redundant. Use the radar comparisons to narrow the scanner, then verify exact display and software support.

#What the no-limit version buys next

Spend the next increment on the unresolved failures identified by the vessel survey. If the inspected drive is unsuitable, the pilot project takes precedence over the second display. If the cockpit radio cannot be operated on watch, price the supported handset and cable route. If the independent chart device relies on the boat's Wi-Fi for position, fix that dependency before calling it a fallback.

For a crew that runs overnight watches, add protected charging for the independent device, a documented configuration backup, accessible spare fuses and cables identified by part number, and crew tuition on the actual system. A thermal camera or a larger radar is a separate mission decision with its own mount, interface and power requirements. Neither belongs in a universal 50-foot package merely because the owner can afford it.

Do not copy a small-yacht pilot recommendation into this boat. For example, Garmin's SmartDrive announcement gives a limit of 45 feet and 33,000 lb displacement. This 50-foot brief is outside that stated length envelope. A different manufacturer or drive architecture must be assessed from the actual steering and loaded displacement.

#Handover for a two-person crew

Have each person demonstrate route retrieval, chart-scale changes, alarm acknowledgement, pilot standby and ordinary radio operation. Record the selected heading and position sources on each display. Simulate an individual display outage at the berth; conduct steering and underway checks only with a safe test plan, adequate crew and immediate manual control. Log defects and corrective actions rather than accepting “all devices appear on the network” as a sea trial.

The equipment list does not decide statutory carriage. Check the state safety resources and the relevant authority for the intended waters. The 32-foot plan explains which capabilities remain important even when space and energy are much tighter.