Appraisal stage of a passage plan means checking port location, ship's routing publications, sailing directions and old plans — an hour+ gone just to see the distance and initial waypoints.
Enter departure & arrival ports.
Get instant route recommendations.
Distance, ETA, canal & strait transits, special areas, piracy and ECA zones crossed — on real shipping lanes, in seconds.
Free to start · runs in your browser · built on official IMO, WPI & Copernicus data
- Ports
- Blockable Canals/Straits
- Security & environmental zones
- Export to ECDIS
Whoever you are on the voyage, the questions are the same — and too slow to answer.
"Captain, revert immediately distance & ETA if we avoid the Panama Canal?" — the office wants it now, but your navigation officer is still resting.
Every voyage estimate means waiting for the vessel to reply, then when verifying route you have piracy zones in one PDF, ECA limits in another and Additional Premium areas in another monitor. The back and forth communication delays and the pressure to respond is a wasted time and effort for everyone.
What you get
Everything the route needs to tell you.
One search draws the route. Then NaviBoss starts answering questions you haven't asked yet.
Route intelligence
The recommended route, not just a random line on a map.
- Routes follow curated professional shipping lanes
- Per-leg and total distance in nm, ETA at any speed
- Drag the track anywhere to add a via-waypoint; the route rebuilds instantly
Alternative routes
Don't want Suez or Panama? Block it.
The alternative route appears instantly — with the exact distance difference in nm.
- 900+ canals & straits, blockable with one tap
- Hover any chokepoint to preview the reroute as a ghost line
- Difference of every avoidance shown in nm before you commit
Security & environment
Know every zone before you enter it.
- Piracy HRAs, war-risk & advisory areas — current industry designations
- ECAs, MARPOL special areas and PSSAs from official IMO coordinates
- 58 zones, 9 categories — with the exact miles your route runs inside each
Ocean currents
Currents? One click, and your route rides them.
Minimum-time routing through real monthly current data — with hours saved shown next to the track.
- Animated overlay — Copernicus GLORYS12 climatology
- Optimized vs shortest route, both on the chart
- Gulf Stream, Agulhas, Kuroshio — take advantage of it
Compare & decide
Compare two or more routes in seconds.
- Each click freezes a voyage card — route, distance and avoid-set locked in
- Via-Suez vs via-Cape vs current-optimized, compared at a glance
- One click restores any scenario exactly as you built it
Everything on board
And that's not the half of it.
Fourteen more reasons this replaces the tab pile.
Searchable by name or UN/LOCODE.
Set the ETA and get the required speed, or set the speed and get the ETA.
A ship sails your route against a sim clock; scrub to any moment of the passage.
Exact sunlight line on the chart; stretches sailed in darkness drawn in indigo.
Export as RTZ, compatible with most ECDIS.
One URL restores the whole scenario: ports, avoids, speed, ETD.
One click between projections, routes drawn true on both.
Maritime zones with a UTC ruler along the chart edge.
The maritime loadline zones, on the chart where they apply.
Borders and names when you need the geographical picture.
Lat/lon under your cursor in degrees-minutes, plus coordinate rulers.
A bridge-friendly dark chart, or a crisp day view.
Fully client-side after one load; no server round-trips to plan.
The full planner with no internet at all.
Three steps. No manual.
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1
Search
Type your departure and arrival ports — by name or UN/LOCODE.
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2
See
The recommended route, distance and ETA appear instantly. Adjust speed, block passages, add stops.
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3
Ship it
Export the RTZ to your ECDIS, or share a link that opens the exact voyage.
One tool. For onboard crew and shore personnel.
- Appraisal-stage answers before the coffee cools
- Second-check a route or ETA independently
- What-if answers for the office — without losing rest hours
- Voyage estimates while the charterer is still on the line
- Same numbers across the whole fleet — no more "which spreadsheet?"
- Nothing to install or license per seat
Choose how you plan your voyage.
Online — plan in your browser, nothing to install. This is what ships today. Offline desktop — the same planner on your machine with no internet at all. It is built and running, but not on sale yet; we finish it when enough of you ask.
Free · 7 days
The full planner, in your browser — no sign-up.
- Instant routing on real lanes
- Alternative routes
- Security & ECA zones
- Currents + optimization
- Every feature, every port
$12 / month
Full access in your browser, billed monthly.
- Everything in the trial, unlocked
- RTZ export to your ECDIS
- Saved voyages & sharing
- Cancel anytime
$99 / year
$8.25/mo — save 31% vs monthly
The same, at the price of ten months.
- Everything in Monthly
- Priority data updates
- Best value online
Planned · $149/yr or $299 once
Windows and Mac, the whole planner on your machine — every port, every lane, zero network. Already built and running here; what is left is the installer, code signing and licensing.
- The full planner, genuinely offline
- Your charts and voyages never leave the ship
- Same routing engine as online
Online subscribers get it at no extra cost for the first year when it lands.
Prices are indicative while we finish the desktop edition — early users lock in launch discounts.
Fair questions.
Where do the routes and data come from?
Routing follows a curated network of professional recommended shipping lanes. Ports come from the World Port Index plus terminal data. Security and environmental zones are built from official IMO instruments (MARPOL Annex VI ECAs, special areas, PSSAs) and current industry HRA designations. Currents are Copernicus GLORYS12 ocean-model climatology.
Will my ECDIS accept the export?
Yes — NaviBoss exports RTZ 1.0 route plans per IEC 61174, matched to files ECDIS are known to accept. Load the file and your waypoints are inside ECDIS.
Is this approved for navigation?
No. NaviBoss is a passage-planning and voyage-estimation aid. Routes derive from professional recommendations, but they're for informational purposes only and must never replace official charts, publications or your own navigation.
Does it work on slow ship internet — or offline?
Yes, a fully offline desktop edition is designed for seafarers onboard with limited internet access.
What does it cost?
The online planner is free for 7 days — every feature, no sign-up. Pro, Fleet and the offline desktop licenses (annual & lifetime) are coming — see Pricing above and join the waitlist for launch discounts.
Instant voyage planner that works fast
Everything you just saw, one search away.
Plan a Run in browser or use offline