Appraisal means opening the routing publications, the sailing directions, digging through years-old files on the ship's PC or your laptop, or asking other officers if they have the same route — just to get a distance and the first waypoints down.
Two ports in.The whole voyage out.
Distance, ETA, canal and strait transits, and every piracy, ECA and special area you would cross — on real shipping lanes, in seconds.
Free forever · no sign-up required
Every number here comes from somewhere you can check.
Searchable by name or UN/LOCODE.
Canals and straits you want to pass or avoid. Block one and the route re-plots with the exact difference in nautical miles.
ECA, MARPOL Special Areas, PSSA, Piracy HRA, war-risk, warlike, VRA and transit corridors.
Curated professional shipping lanes — routes are shortest-path over real lanes.
Currents are Copernicus GLORYS12 monthly climatology; forecasts are NOAA GFS and GFS-Wave; coastlines are Natural Earth. A planning tool — not for navigation.
Made for both onboard and shore team
“Captain, revert immediately distance & ETA if we avoid the Panama Canal?” The office wants it now, and your navigation officer is resting.
Every estimate waits on the vessel to reply. Then piracy areas are in one PDF, ECA limits in another and additional-premium areas on a third screen.
One search draws the route. Then it keeps answering.
See what NaviBoss can provide you.
The recommended route, not a straight line on a map.
Routing follows a curated network of professional shipping lanes.
- Per-leg and total distance in nm, ETA at any speed
- Set the ETA and get the speed, or the speed and get the ETA
- Drag the track anywhere to add a via-waypoint; it rebuilds instantly
- Drifting at sea? Start the route from your current position
- Need a stopover at Cape Town? Add a stop anywhere on the chart
Don't want Suez or Panama? Block it.
The alternative appears instantly — with the exact distance difference in nautical miles, before you commit to anything.
- 953 canals & straits, blockable with one tap
- Hover a chokepoint to preview the reroute as a ghost line
- The difference of every avoidance, in nm
Know every zone before you enter it.
Different zones across various categories, with the exact miles your route transits inside each one.
- Piracy HRAs, war-risk and advisory areas — current industry designations
- ECAs, MARPOL special areas and PSSAs from official IMO coordinates
- Currents overlay and one-click minimum-time routing optimisation
And that's not the half of it.
See the rest of what's in the planner.
See your ship's position on any date by dragging the playback scrubber.
View the world as a globe, or as a flat chart like your ECDIS.
RTZ, GPX and every major ECDIS and chartplotter dialect — Furuno, JRC, Kongsberg, Sperry, Transas and more. Both directions.
Send the route to anyone — the relieving master, the office, whoever you like.
The exact sunlight line at any zoom, on globe or chart.
Maritime zones with a UTC ruler along the chart edge.
Load Lines 1966 seasonal zones, on the chart where they apply.
Everything runs in your browser after the first load. Offline version coming soon.
Move your mouse over the chart and read the latitude and longitude straight off it.
Country names and borders on sight — no zooming or right-clicking to find out whose water you're in.
Three easy steps.
Nothing to install, nothing to configure.
Type your departure and arrival ports — by name or UN/LOCODE — and add stops if the voyage needs them. Or start from coordinates in the middle of the ocean and enter your destination.
The recommended route, distance and ETA appear instantly. Adjust speed, block a canal, check which piracy or ECA zones you cross and how far you run inside each.
Export straight into your ECDIS or chartplotter — 35 formats covered — or send a link that reopens the exact voyage — ports, avoided passages, speed and ETD — on someone else's screen.
One tool, for onboard team and for shore personnel.
Who will benefit from this app.
Choose how you plan your voyage.
Plan in your browser — nothing to install. Free forever; pay only when you need to export.
Free· forever
Starts with 7 days of everything, export included.
The planner never stops working — no sign-up, no card, no expiry.
- Instant routing on real lanes
- Alternative routes & blockable passages
- Security & ECA zones
- Currents + optimisation
- Every port, every lane
- Share any voyage by link
$12/ month
Full access in your browser, billed monthly.
- Everything in Free, plus:
- Export to 35 route formats
- Unlimited saved voyages, compared side by side
- Cancel anytime
$97/ year
$8.08 a month — save 33% against monthly.
The same planner, for a third less every month.
- Everything in Monthly
- Priority data updates
| Free | Monthly | Annual | |
|---|---|---|---|
| Price | Free forever | $12 / mo | $97 / yr |
| Sign-up required | No | Yes | Yes |
| Routing on real shipping lanes | ✓ | ✓ | ✓ |
| Blockable canals & straits | ✓ | ✓ | ✓ |
| Risk, ECA & special areas | ✓ | ✓ | ✓ |
| Currents overlay & optimisation | ✓ | ✓ | ✓ |
| Share a voyage by link | ✓ | ✓ | ✓ |
| Saved voyages | 1 at a time | Unlimited | Unlimited |
| Export to 35 route formats | First 7 days | ✓ | ✓ |
| Priority data updates | — | — | ✓ |
| Cancel anytime | n/a | ✓ | ✓ |
Offline edition currently has high demand. The first 100 users lock in discounts of 50–70% — message us now.
Fair questions.
data & sources
Where do the routes and data come from?
Routing follows a curated network of professional recommended shipping lanes. Ports come from the NGA World Port Index plus terminal data, with UN/LOCODEs from the UNECE registry. Security and environmental zones are built from official IMO instruments — MARPOL Annexes, special areas and PSSAs — plus current industry piracy designations. Currents are Copernicus GLORYS12 ocean-model climatology.
How current are the zones?
The zones are rebuilt from the published coordinate tables, such as IMO circulars or industry publications.
export & accuracy
Will my ECDIS accept the export?
Yes. NaviBoss exports to 35 route formats — RTZ, GPX and every major ECDIS/chartplotter dialect (Furuno, JRC, Kongsberg, Sperry, Transas, Wärtsilä, SIMRAD, Raytheon, SevenCs, MaxSea, TOTEM, Chart Pilot and more), both directions. Load the file and your waypoints are inside your system.
How accurate are the distances?
Legs are true distances over the lane network, not straight lines on a Mercator chart.
Is this approved for navigation?
No. NaviBoss is a passage-planning and voyage-estimation aid. The routes derive from professional recommendations, but they are for informational purposes only and must never replace official charts, publications or your own navigation.
commercial
What does it cost?
The planner is free forever — no sign-up, no card, no expiry. Your first 7 days include everything; after that, exporting to your ECDIS and keeping more than one saved voyage need a plan, at $12 a month or $97 a year.
Does it work on slow ship internet — or offline?
On slow internet, yes: after the first load everything runs in your browser with no server round-trip. A fully offline desktop edition is built and running, but it is not on sale yet — there is a waitlist under Pricing.
Have a quick try of the voyage planner
Just type two ports and see the instant recommended route plus distances. Free forever, no sign-up.