Sailing Route Planner: Plotting a Passage by Wind and Tide

Sailing adds a variable that power boaters can mostly ignore: the wind decides whether a route is fast, slow, or miserable. A good sailing route planner does not just draw a line between two harbors, it factors in wind angle, tide, and current so the course you plan is one you can actually sail. This guide covers how sailing route planners work, which apps handle wind and tide best in 2026, and how to plan a passage under sail.

A note for context: Marine OS is marina management software, and we are building a route planner for boaters alongside it. The apps below are the ones sailors actually use, described plainly.

#Why sailing route planning is different

A sailboat cannot sail directly upwind, so the shortest line between two points is often not sailable at all. A sailing route planner works around this by considering the wind angle along the route and, in the better tools, your boat's performance at each angle. The result is a plan that reflects how the boat actually moves through the water, including the tacks a beat to windward will require.

• Wind angle: the plan respects that speed depends on your angle to the wind, not just the rhumb line.
• Tide and current: a foul tide can cancel out boat speed, so timing a passage around the tide matters.
• Polars: performance data for your boat lets weather routing estimate real passage times.
• Waypoints and legs: you still set marks and read distance and bearing for each leg.

#The best apps for sailing route planning

#Savvy Navvy

Savvy Navvy builds a course to steer that folds in wind, tide, and chart data, then lets you preview each leg. Its wind-aware routing and clean interface make it a favorite among cruising sailors who want a guided plan rather than a blank chart.

#PredictWind

PredictWind is the standard for offshore passage weather routing. It uses your boat's polars and multiple weather models to calculate the fastest or most comfortable route across open water, with GRIB downloads and departure planning. It is built for serious passage-makers, with a steeper learning curve to match.

#OpenCPN with routing plugins

OpenCPN is free, open-source chartplotter software, and with weather-routing plugins it can compute wind-aware routes on a laptop at the nav station. It asks more of you to set up than a polished app, but it is genuinely capable and costs nothing.

#Planning a sailing passage, step by step

1. 1Check the forecast window and pick a departure time that gives you a workable wind angle.
2. 2Set your start, destination, and any waypoints that keep you clear of hazards and traffic.
3. 3Let the planner route by wind and tide, then read the legs, distances, and estimated times.
4. 4Sanity-check the plan against the chart and your own local knowledge before you rely on it.
5. 5Confirm where you will berth at the destination so the arrival is not a scramble.

#The passage ends at a marina

However you route the sail, the plan finishes at a berth. Marinas that offer online slip reservations let you lock in a spot before you arrive, so the last leg of a long passage is the easy one. For the full app comparison, see the best marine route planner apps, and for the method itself, our passage planning guide.

#Frequently asked questions

Route the sail by wind and tide, sanity-check it against the chart, and book your berth ahead. For more, compare the best route planner apps and read the passage planning guide.