AI for Boating

Know before you go.

Lir AI gives you calm, captain-grade answers about tides, currents, bridges, locks, and conditions — pulled live from official federal sources and grounded in your vessel's actual numbers.

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Built by a USCG-licensed captain — 1600 Master Oceans and Master of Towing

4,000+
Navigation Pins
83M
River Graph Nodes
Live
NOAA · USGS · USCG
9
Coast Pilot Volumes
The problem

The water doesn't wait.
Neither should you.

Every captain has felt it — standing at the helm trying to piece together tide windows, bridge schedules, lock status, and weather from half a dozen sources while the current is already running against you.

Lir was built to remove that friction. One question. One clear answer. Backed by the same official data the professionals use.

AI — Core, Not a Feature

Ask it anything.
It actually looks it up.

Lir isn't a chart viewer with an AI chatbot bolted on. The AI is the engine. Every briefing, every clearance check, every LNM scan — Lir runs live data tool calls against federal sources and gives you a calm, captain-ready answer. It knows your vessel. It knows your route. It knows what's in your stretch of water.

Live data tools available to the AI
🌊
Tide Lookup
NOAA predictions at any named waypoint on your route
🌀
Current & Slack Water
Flood / ebb speed and next slack at any station
🌉
Air Gap / Bridge Clearance
Real clearance vs. your vessel's air draft — safety-critical
🔒
Lock Status
USACE LPMS live state — open, closed, delayed, dimensions
📏
River Gauge
USGS / USACE stage and trend — flood alerts included
📰
LNM Near Position
USCG Notices to Mariners scanned within your area
🌦️
Marine Weather
NWS marine zone forecast for any waypoint on your route
📍
Waypoint Intelligence
Full detail — VHF, schedule, CFR cite, seasonal hours, phone
Example — Ask Lir while underway
Captain
What's the current at Hell Gate right now and is the tide working against us?
Lir
Current at Hell Gate is running ebb at 2.3 kts — against you on a northbound. Next slack is at 14:42 local. If you hold 30 minutes you'll pick up a fair tide for the full run through to Throgs Neck. At your 8 kt cruise speed that saves you about 45 minutes over fighting it now.
Captain
Any LNMs I should know about in the area?
Lir
One active LNM within 15 nm — buoy 14A in the East River channel has been reported out of position. USCG District 1, Week 18. No dredge or cable-lay notices affecting your route.
AI Route Briefing
Full pre-departure package — weather, bridges, tides, LNMs — generated before you leave the dock
Area Briefing
15 nm radial snapshot for when you're anchored or working a local area
Vessel-Aware
Every answer is grounded in your actual boat — LOA, draft, air draft, speed, certifications
What you get

The full intelligence stack

One subscription. Every layer of navigation intelligence — AI planning tools, live federal data, and underway HUD.

🤖
AI Tools
AI
  • Ask Lir — Underway AI
    Type any navigation question while underway. Lir runs live tool calls and streams back a plain-English answer.
  • AI Voyage Briefing
    Pre-departure intelligence package — full route weather, every bridge and lock, tide windows, LNMs, waypoint notes.
  • Area Briefing
    15 nm radial situational briefing from your GPS fix — built for captains working a home area, not just passage planners.
  • Document Intelligence
    Upload COIs, stability letters, and manuals. AI extracts expiration dates, route restrictions, and manning requirements.
🗺️
Navigation Data
  • Bridge & Lock Intelligence
    Opening schedules, clearance heights, VHF channels, CFR §117 citations, advance notice requirements, lockmaster phone numbers.
  • Live Lock Status
    USACE LPMS real-time state — open, delayed, or closed. Parks Canada locks included.
  • Tide & Current Charts
    Animated SVG plots per waypoint — full tidal cycle, flood/ebb direction, speed, and next slack.
  • River Gauge & Flood Stage
    USGS / USACE CWMS stage, trend, and flood warnings — integrated into AI answers and route briefings.
  • AIS Vessel Traffic
    Live AIS positions on the chart — vessel name, course, speed, and type.
  • NOAA ENC Chart Overlay
    Official electronic navigational charts as a live map layer — the same data backing commercial chart plotters.
📚
Planning & Reference
  • Offshore Route Planner
    Visibility-graph router with obstruction avoidance around shoals and restricted areas. Full passage plan with waypoints and distances.
  • US Coast Pilot — All 9 Volumes
    Every volume indexed and searchable. Hazard notes, anchorage guidance, and port approaches attached to relevant chart pins.
  • Local Notices to Mariners
    USCG LNMs auto-matched to your route by district. No manual PDF download, no cross-referencing.
⚓
Vessel & Integration
  • Vessel Brain
    Full vessel profile — LOA, beam, draft, air draft, engines, generators, systems, and certifications. The AI uses every number.
  • Chartplotter Integration
    Connect via browser GPS on a tablet, SignalK WebSocket, or Rose Point NMEA bridge. Live speed, heading, and position in the HUD.
  • Captain Notes
    Moderated community waypoint notes — local knowledge, shoaling reports, and approach tips attached to chart pins.
Built by a captain

This came from the wheelhouse, not a conference room.

Lir AI was built by someone who has stood watch on the water commercially — not a developer who discovered boating. That matters because the AI knows what actually matters underway: whether the bridge opens on demand or advance notice, whether a 2.3 kt ebb at Hell Gate costs you 45 minutes or gets your anchor fouled, what "delayed" at a lock actually means for your schedule.

The federal data is real. The questions the AI knows to ask are real. The things it surfaces first are what an experienced captain would want to know first.

USCG License
1600 Ton Master
Oceans
+ Master of Towing — Inland and Near Coastal
Pricing

Simple, transparent plans

No free tier. No ads. Your subscription funds the data infrastructure and the team keeping it accurate.

Most Popular
Lir
$19.99
per month · cancel anytime
  • Full navigation HUD with NOAA ENC chart overlay
  • Ask Lir — conversational AI with 8 live data tools
  • AI voyage briefing & area briefing
  • Bridge & lock intelligence — CFR §117, USACE LPMS, phone directory
  • AIS vessel traffic layer
  • Tide & current charts at every waypoint
  • River gauge & flood stage (USGS/CWMS)
  • Vessel Brain — profile, documents, AI extraction
  • Coast Pilot (all 9 volumes) + LNM auto-matching
  • Chartplotter integration — GPS, SignalK, Rose Point
  • 4,000 AI credits per month
Get Started
Lir Pro
$30.00
per month · cancel anytime
  • Everything in Lir
  • 8,000 AI credits per month
  • Metered overage — never get cut off at sea
  • Early access to new tools as they ship
  • Direct line to the development team
Get Started

Stop cross-referencing five websites.
Just ask Lir.

One subscription. Every layer of navigation intelligence — AI planning, live federal data, and underway HUD — in one place.

Get Started See How It Works

Cancel anytime  ·  No free tier  ·  No ads