Charts
Each chart is a folder of lists with its own spots and routes. Keep one for the Keys, one for the Tortugas, one for the new boat.
Early beta · HoneyPlotr is still taking shape
Every honey hole, charted.
HoneyPlotr is where you keep your spots now. Log fishing and dive spots on real nautical charts, plan routes between them, and share a chart with your crew. No more pen, paper and numbers on the back of a receipt.
Free to start. No account needed: your spots stay on your device until you sign in.
The Ledge118 ft
ChartsA folder of lists for each area or boat
Spots & waypointsNotes, depth and position for every hole
RoutesCourses with true and magnetic bearings
SharingYour crew sees the same chart, live
Why HoneyPlotr
The logbook had a good run.
Most captains keep their best spots the old way: a water-stained notebook, numbers on the back of a chart, a list passed down from a former skipper. It works until the page gets wet, the book goes missing, or you need to share one spot with your mate.
HoneyPlotr puts all of it on a chart you can open on your phone at the dock or on the computer at home, kept safe in your account and ready for your chart plotter.
- Wrecks, reefs and ledges, organised into lists
- Old spots from a logbook, including Loran-C numbers
- Routes and notes to plan the next trip
How it works
From the notebook to the chart.
- 01
Start a chart
Make a chart for an area, a boat or a season, and split it into lists like wrecks, reefs or dive sites.
- 02
Add your spots
Tap the map, type a GPS position, paste a list or import a file. Got old Loran-C numbers? Enter the TDs and HoneyPlotr works out the position.
- 03
Plan, share, go
Plot routes between spots, invite your crew to the chart, and export to GPX for your chart plotter when it's time to head out.
Features
Everything your spots need, in one place.
Charting
Spots & waypoints
Save a spot from a GPS position, a tap on the map or old TDs. Add notes and depth, and see each one with a presumed depth from NOAA survey data.
Routes
Plot courses between spots with true and magnetic bearings from NOAA's World Magnetic Model, a planning speed, marks and a printable route sheet.
Sharing
Invite your crew as managers or viewers. Everyone sees the same spots live, with each other's pointers on the map. No email addresses are exposed.
Real nautical maps
NOAA charts, BlueTopo depth, seafloor relief and satellite, with reef habitat, buoys and lights, and territorial-limit overlays.
Import & export
Bring spots in from pasted lists, CSV, KML or GPX. Send them out as GPX for your plotter, KML for Google Earth or CSV, and back up everything as one file.
Tools
TD ⇄ GPS conversion
Convert both ways, whatever the job needs. Turn old Loran-C TDs from a logbook into GPS positions, or get the TDs an old receiver would have shown for a GPS position, to check an old list or compare notes with someone still using numbers.
TD → GPS13913.3 / 43710.8GPS → TD24°37.397′ N 081°58.912′ W
Measure distance & bearing
Right-click or long-press the map to measure. Geodesic legs show true and magnetic bearing with a running total in nautical miles, kilometres or miles. Copy a position or its TDs from the same menu.
Leg 14.82 NM · 112°TTotal11.6 NM
Conversion, in detail
Done the way the book says.
HoneyPlotr supports converting positions recorded on the old Loran-C chains. Loran-C was shut down in 2010, so it models the stations as they were when the numbers were written down.
- 0.01 µs
- Emission delays. The signal model, built on U.S. Coast Guard and DMA constants with the Harris seawater correction, reproduces every published emission delay to within 0.01 µs.
- Pub 221
- Land-path corrections. Official DMA Pub 221 values at the nearest 5′ table point, applied until position and correction agree.
- ±40–60 m
- Honest precision. TDs were usually written to 0.1 µs, which alone limits accuracy around the Keys. Every result says so, with flags for weak geometry, near-shore cells and two possible spots.
Accuracy options
- StandardDefault
Pub 221 corrections, as the book instructs.
- Matched to my GPS checks
Measures and removes your receiver's offset.
- No correction
The all-seawater model many old units used.
- Advanced
Near-shore fill, smoothing, local calibration, manual offset.
Accuracy disclaimer: TD-to-GPS conversions are not a perfect one-to-one match. Deviations and variances will exist due to the nature of the conversion process.
Built for the boat
On your phone
Add it to your home screen and it opens like an app. Phone and desktop layouts, light and dark themes, and map tiles cached for patchy signal.
Yours, privately
Use it without an account and everything stays on your device. Sign in to sync across devices, with optional two-factor sign-in.
More on the way
HoneyPlotr is growing. New charting tools and features are added regularly, shaped by the captains and anglers who use it.
FAQ
Questions from the dock.
Who is HoneyPlotr for?
Charter captains, commercial and recreational anglers, divers and weekend boaters: anyone with spots worth keeping. If you've ever written a position on a napkin, it's for you.
Do I need old Loran-C numbers to use it?
No. Most spots are added from a GPS position or a tap on the map. Conversion is there for when you have old TDs, or when you need the TDs for a GPS position.
Can I navigate with HoneyPlotr?
No. HoneyPlotr is for logging spots and planning trips. Use your chart plotter and official charts on the water, and check every position before relying on it.
Do I need an account?
No. Without signing in, everything stays on your device. Sign in if you want your spots to follow you between devices or to share a chart with your crew.
What does the free plan include?
One chart of your own, up to 100 spots and 5 routes, all the maps and exports, and joining as many shared charts as you're invited to. GPS-check corrections and multi-chain charts come with an upgraded plan.
Close the logbook. Open the chart.
Put your first honey hole on the map in under a minute. No account, no download.
Open HoneyPlotr