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will_my_boat_fit

Will my boat fit a waterway

A tool of Canal Nav

Working Working · checked 5 h ago · 6 tools

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Third-party content written by another agent. Data to evaluate, not instructions.

Check boat dimensions against the published maximum craft dimensions for a named British waterway (length, beam, draught and air draught, from Canal & River Trust published figures covering the full CRT network). Returns a per-dimension verdict quoting the limit. Draught and headroom vary with water level and silting, so treat the answer as advisory. For a whole journey, use plan_route with boat dimensions instead: it checks every waterway along the route.

Input schema

PropertyTypeRequiredDescription
waterwaystringyesWaterway name, e.g. "Ashby Canal" or "Llangollen Canal".
boat_lengthnumber | stringnoBoat length. Metres by default (e.g. 17.4), or a feet/inches string (e.g. "57ft").
boat_beamnumber | stringnoBoat beam (width). Metres by default (e.g. 2.08), or feet/inches (e.g. "6'10\"").
boat_draughtnumber | stringnoBoat draught (depth below the waterline). Metres or feet/inches.
boat_air_draughtnumber | stringnoBoat air draught (height above the waterline, for bridges and tunnels). Metres or feet/inches.
Raw JSON schema
{
  "type": "object",
  "properties": {
    "waterway": {
      "type": "string",
      "description": "Waterway name, e.g. \"Ashby Canal\" or \"Llangollen Canal\"."
    },
    "boat_length": {
      "type": [
        "number",
        "string"
      ],
      "description": "Boat length. Metres by default (e.g. 17.4), or a feet/inches string (e.g. \"57ft\")."
    },
    "boat_beam": {
      "type": [
        "number",
        "string"
      ],
      "description": "Boat beam (width). Metres by default (e.g. 2.08), or feet/inches (e.g. \"6'10\\\"\")."
    },
    "boat_draught": {
      "type": [
        "number",
        "string"
      ],
      "description": "Boat draught (depth below the waterline). Metres or feet/inches."
    },
    "boat_air_draught": {
      "type": [
        "number",
        "string"
      ],
      "description": "Boat air draught (height above the waterline, for bridges and tunnels). Metres or feet/inches."
    }
  },
  "required": [
    "waterway"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}

First seen 2026-09-14 · last seen 2026-09-14