Displacement hull speed

Code snippets

curl "https://api.oanor.com/froude-api/v1/hull-speed" \
  -H "x-oanor-key: oanor_test_..."

await fetch("https://api.oanor.com/froude-api/v1/hull-speed", {
  headers: { "x-oanor-key": "oanor_test_..." }
});

$ch = curl_init("https://api.oanor.com/froude-api/v1/hull-speed");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);

import requests
requests.get(
    "https://api.oanor.com/froude-api/v1/hull-speed",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "note": "Displacement hull speed v = 1.34·√(L_wl in ft) knots — the speed where the bow and stern waves equal the hull length (Fr≈0.4). A 10 m waterline gives ≈7.7 knots.",
        "inputs": {
            "waterline_length_m": 10
        },
        "froude_number": 0.398726,
        "hull_speed_ms": 3.9485,
        "hull_speed_kmh": 14.2147,
        "hull_speed_knots": 7.6753
    },
    "meta": {
        "timestamp": "2026-06-05T19:50:28.509Z",
        "request_id": "64a2a221-61eb-4bfe-8eea-8fe86257abde"
    },
    "status": "ok",
    "message": "Hull speed",
    "success": true
}