What is LIR?

⚓ Who built LIR?

LIR was built by Captain Jonathon, a USCG Licensed Master (1600 Tons, Oceans, Master of Towing, Western Rivers) who operates commercial vessels on US inland and coastal waterways. He built LIR because the navigation tools he needed as a working captain didn't exist.

The credentials matter. Bridge clearance calculations, tidal window planning, ColRegs interpretation, and engine troubleshooting in LIR reflect real operational experience — not general internet knowledge assembled by a software team that has never operated a vessel. LIR is developed by XeroHuman AI LLC.

🧭 What does LIR do?

LIR operates in three modes:

• Ask LIR — a conversational AI that answers navigation questions using your vessel's profile and live federal data. Bridge clearances, ColRegs, engine fault codes, USCG notices, tidal windows.
• Voyage Plan — generates a complete passage brief for any ICW or offshore route: bridge list with tidal clearances, active USCG hazard notices matched to your route, tidal windows, fuel range against your tank capacity, and an AI-synthesized situation narrative.
• Local Mode — a live situational awareness feed for your current position: active LNM notices within your chosen radius, nearby bridge clearances, current tides and water levels, AIS traffic, and restricted areas.

Every calculation uses your Vessel Brain — a detailed profile including your draft, air draft, engine make and model, engine hours, fuel capacity, generator specs, and thruster configuration. LIR's answers are specific to your boat, not generic.

📡 What data sources does LIR use?

LIR pulls live data directly from US federal agency APIs and pairs it with a 31,320-chunk curated maritime knowledge base. No third-party aggregators. No cached web results.

🚢 Who is LIR for?

LIR is built for captains making real operational decisions — not recreational curiosity browsing. The users who get the most out of it are:

• Great Loop cruisers planning multi-day passages through the ICW, Gulf Coast, western rivers, and Great Lakes approaches — where bridge clearances, lock schedules, and tidal windows determine the route.
• Offshore passage makers running the Atlantic coast, Gulf of Mexico, Pacific coast, or heading to Alaska and Hawaii — who need shoal avoidance, Gulf Stream awareness, and tidal inlet timing.
• Commercial mariners and towing operators who need ColRegs references, CFR lookups, and routing decisions that hold up operationally.
• Liveaboards and coastal cruisers moving frequently through ICW anchorages, bridges, and inlets where local conditions matter.
• Boat owners who want help troubleshooting engine, generator, and systems problems — add your vessel's engine make, generator specs, and systems to Vessel Brain and LIR answers everything specific to your boat.

LIR is not a chart plotter and does not replace one. It is an intelligence layer — the contextual reasoning and live data briefing that a chart plotter cannot provide.

⚡ How is LIR different from ChatGPT or other AI?

ChatGPT will attempt to answer navigation questions but has no access to current tides, active hazard notices, live bridge sensor data, or ENC chart polygons. LIR scored 29 out of 30 on a professional navigation rules examination and answers ColRegs questions with rule citations and jurisdiction flags.

💳 What does LIR cost?

LIR uses a credit system. Each AI query costs credits. New users receive 100 free credits to try the product before subscribing — enough to run several voyage briefs and Ask LIR queries.