Brass helm region hub
Lock IALA Region A or B once, then browse lateral, preferred-channel, cardinal N/E/S/W, isolated-danger, safe-water, and special marks as enamel cards with body color, topmark, and light.
Night-watch study · IALA cockpit loop
BuoyRead Channel Kit
IALA A and B buoyage, light rhythms, and leave-to drills in one cockpit-ready study loop—so you stop guessing red-right-returning when the inlet lights start blinking.
7+
mark families in the seeded encyclopedia
A + B
IALA regions on one helm hub
On-device
blink, drill & strip data stays local
Brass-helm confidence before cast-off. Lock a region, rehearse junctions, and run your Home Stretch strip while the dock is still quiet—not when the foghorn answers.
Illustrative marketing figures; not App Store metrics. · iOS Navigation study for coastal skippersCockpit gallery
Enamel cards, flash playback, graded leave-to overlays, and approach strips—five frames from the night-watch loop.
Studio instruments
Six instruments on one asymmetric board—pick a region, blink a light, grade a junction, pin a weak signal.
Live light-flash playback
Open any mark and scrub Fl, Fl(2), Oc, Iso, Q, VQ, or LFl as a timed on-device blink with period and duty-cycle readout—exact rhythm, not a static icon.
Graded leave-to scenarios
A channel diagram shows a junction or bend; tap Port or Starboard leave-to (or safe-water). Score, short rule callout, and corrected overlay path follow instantly.
Home Stretch approach strips
Drag seeded or custom marks into sequence for your marina or inlet, annotate mile notes, and flip full-screen as a pre-departure mental rehearsal deck.
A↔B split junction viewer
Same silhouette, simultaneous enamel cards, one-tap swap region—lock red-right versus red-left differences before night or foreign waters.
Fog blasts & Light Rhythm boards
Play power, sail, and aground/anchor blast patterns, quiz meaning, then cover waveform labels, name the characteristic, and pin misses into a Weak Signals pile.
On-device night watch
Blink timing, drill scores, and Home Stretch decks stay on your iPhone—built for dockside rehearsal without a cloud chart plotter tether.
Built for the inlet, not the argument
New boaters, sailing-school students, coastal kayak tour leads, and harbor skippers who must leave marks correctly before they cast off.
BuoyRead Channel Kit is an interactive maritime buoyage and daymark reading studio for new boaters, sailing-school students, kayak tour leads, and harbor skippers. Pick Region A or B on the brass helm hub, study enamel-style mark cards with live flash playback, grade yourself on junction leave-to scenarios, then build a Home Stretch approach strip you can flip through before you cast off.
Animated light characteristics, port/starboard drills, A-vs-B split views, and fog sound quizzes turn dense COLREGS/IALA rules into a tactile skill you can rehearse on the dock—not argue about in the fog.