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The skill's requests and instructions are consistent with a marine weather briefing: it only uses curl to call Open‑Meteo endpoints and does not ask for credentials, unusual binaries, or installs.

安装（复制给龙虾 AI）

将下方整段复制到龙虾中文库对话中，由龙虾按 SKILL.md 完成安装。

请把本段交给龙虾中文库（龙虾 AI）执行：为本机安装 OpenClaw 技能「Marine Forecast」。简介：Marine and sailing weather via Open-Meteo. Waves, swell, sea temperature, wind,…。
请 fetch 以下地址读取 SKILL.md 并按文档完成安装：https://raw.githubusercontent.com/openclaw/skills/refs/heads/main/skills/alexissan/marine-forecast/SKILL.md
（来源：yingzhi8.cn 技能库）

SKILL.md

打开原始 SKILL.md（GitHub raw）

---
name: marine-forecast
description: "Marine and sailing weather via Open-Meteo. Waves, swell, sea temperature, wind, tides, ocean currents, and sailing assessments. Free, no API key, global coverage."
homepage: https://open-meteo.com/en/docs/marine-weather-api
metadata: {"clawdbot":{"emoji":"🌊","requires":{"bins":["curl"]}}}
---

# Marine Forecast

Marine and sailing weather using Open-Meteo Marine API + Weather API. Free, no API key required, works worldwide.

Two APIs are used together — replace `LAT`, `LON`, and `TZ` in all commands:
- **Marine API** (`marine-api.open-meteo.com`) — waves, swell, sea temp, currents, tides
- **Weather API** (`api.open-meteo.com`) — wind, gusts, air temp, pressure, visibility

Find coordinates for any location using web search or the user's input. Use the nearest timezone (IANA format, e.g. `Europe/London`, `America/New_York`, `Atlantic/Canary`).

## Current conditions

Sea state:
```bash
curl -s "https://marine-api.open-meteo.com/v1/marine?latitude=LAT&longitude=LON&current=wave_height,wave_direction,wave_period,swell_wave_height,swell_wave_direction,swell_wave_period,sea_surface_temperature&timezone=TZ"
```

Wind and atmosphere:
```bash
curl -s "https://api.open-meteo.com/v1/forecast?latitude=LAT&longitude=LON&current=temperature_2m,wind_speed_10m,wind_direction_10m,wind_gusts_10m,apparent_temperature,pressure_msl,cloud_cover,visibility&timezone=TZ"
```

Run both and combine the results into a single briefing.

## Hourly forecast

Marine (up to 16 days, adjust `forecast_days`):
```bash
curl -s "https://marine-api.open-meteo.com/v1/marine?latitude=LAT&longitude=LON&hourly=wave_height,wave_direction,wave_period,swell_wave_height,swell_wave_direction,swell_wave_period,swell_wave_peak_period,wind_wave_height,wind_wave_direction,sea_surface_temperature,ocean_current_velocity,ocean_current_direction,sea_level_height_msl&forecast_days=3&timezone=TZ"
```

Wind (up to 16 days):
```bash
curl -s "https://api.open-meteo.com/v1/forecast?latitude=LAT&longitude=LON&hourly=wind_speed_10m,wind_direction_10m,wind_gusts_10m,temperature_2m,pressure_msl,visibility,cloud_cover,precipitation_probability&forecast_days=3&timezone=TZ"
```

## Daily summary

Marine:
```bash
curl -s "https://marine-api.open-meteo.com/v1/marine?latitude=LAT&longitude=LON&daily=wave_height_max,wave_direction_dominant,wave_period_max,swell_wave_height_max,swell_wave_direction_dominant,swell_wave_period_max&forecast_days=7&timezone=TZ"
```

Weather:
```bash
curl -s "https://api.open-meteo.com/v1/forecast?latitude=LAT&longitude=LON&daily=wind_speed_10m_max,wind_gusts_10m_max,wind_direction_10m_dominant,temperature_2m_max,temperature_2m_min,sunrise,sunset,uv_index_max,precipitation_probability_max&forecast_days=7&timezone=TZ"
```

## Tides (sea level)

```bash
curl -s "https://marine-api.open-meteo.com/v1/marine?latitude=LAT&longitude=LON&hourly=sea_level_height_msl&forecast_days=3&timezone=TZ"
```

High/low tide: find local maxima and minima in the `sea_level_height_msl` array. Sea level includes tidal signal + inverted barometer effect.

## Ocean currents

```bash
curl -s "https://marine-api.open-meteo.com/v1/marine?latitude=LAT&longitude=LON&hourly=ocean_current_velocity,ocean_current_direction&forecast_days=3&timezone=TZ"
```

## Presenting results

Always present marine data as a structured sailing briefing:

### Current conditions format

```
Sea:    [wave_height]m waves, [wave_period]s period, from [direction]
Swell:  [swell_wave_height]m from [direction], [swell_wave_period]s period
Wind:   [wind_speed] km/h [direction], gusts [wind_gusts] km/h
Temp:   Air [temperature]C (feels [apparent_temperature]C), Sea [sea_surface_temperature]C
Sky:    [cloud_cover]% cloud, [visibility/1000]km visibility
```

### Sailing assessment

Rate conditions based on the data:
- **Calm** — waves < 0.5m, wind < 12 km/h (Beaufort 0-2)
- **Light** — waves 0.5-1m, wind 12-19 km/h (Beaufort 3)
- **Moderate** — waves 1-2m, wind 20-38 km/h (Beaufort 4-5)
- **Rough** — waves 2-3m, wind 39-49 km/h (Beaufort 6)
- **Very Rough** — waves 3-4m, wind 50-61 km/h (Beaufort 7)
- **Dangerous** — waves > 4m or wind > 62 km/h (Beaufort 8+)

Flag warnings:
- Small craft advisory: wind gusts > 50 km/h or wave height > 3m
- Gale warning: sustained wind > 62 km/h or wave height > 5m
- Suggest activity suitability: sailing, diving, fishing, swimming, surfing

### Beaufort scale

| Force | km/h | Description | Sea State |
|-------|------|-------------|-----------|
| 0 | 0-1 | Calm | Flat |
| 1 | 2-5 | Light air | Ripples |
| 2 | 6-11 | Light breeze | Small wavelets |
| 3 | 12-19 | Gentle breeze | Large wavelets |
| 4 | 20-28 | Moderate breeze | Small waves |
| 5 | 29-38 | Fresh breeze | Moderate waves |
| 6 | 39-49 | Strong breeze | Large waves |
| 7 | 50-61 | Near gale | Breaking waves |
| 8 | 62-74 | Gale | High waves |
| 9 | 75-88 | Severe gale | Very high waves |
| 10 | 89-102 | Storm | Exceptionally high waves |

### Wind direction conversion

Convert degrees to compass: divide by 22.5, round, index into `[N, NNE, NE, ENE, E, ESE, SE, SSE, S, SSW, SW, WSW, W, WNW, NW, NNW]`.

Quick reference: 0=N, 45=NE, 90=E, 135=SE, 180=S, 225=SW, 270=W, 315=NW.

## Units

| Measurement | Unit |
|-------------|------|
| Wave height | meters (m) |
| Wave period | seconds (s) |
| Wind speed | km/h |
| Temperature | Celsius (C) |
| Current velocity | km/h |
| Directions | degrees (0=N, 90=E, 180=S, 270=W) |
| Sea level | meters relative to MSL |
| Visibility | meters |
| Pressure | hPa |

Users may prefer knots for wind. Convert: `knots = km/h * 0.539957`. Add `&wind_speed_unit=kn` to the weather API URL to get knots directly.

## Popular sailing locations (reference)

| Region | Example | Lat | Lon |
|--------|---------|-----|-----|
| Canary Islands | Las Palmas | 28.1 | -15.4 |
| Balearics | Palma de Mallorca | 39.57 | 2.65 |
| Greek Islands | Piraeus | 37.94 | 23.65 |
| Croatia | Split | 43.51 | 16.44 |
| Caribbean | St. Maarten | 18.04 | -63.05 |
| South Pacific | Tahiti | -17.53 | -149.57 |
| Southeast Asia | Phuket | 7.88 | 98.39 |
| East Africa | Zanzibar | -6.16 | 39.19 |
| Australia | Sydney | -33.87 | 151.21 |
| US East Coast | Annapolis | 38.97 | -76.49 |
| UK | Solent | 50.77 | -1.30 |
| Scandinavia | Gothenburg | 57.71 | 11.97 |

## Data sources

- ECMWF WAM (European Centre for Medium-Range Weather Forecasts)
- NOAA GFS Wave (Global Forecast System)
- DWD GWAM/EWAM (German Weather Service)
- Resolution: 5-25 km depending on region and model
- Updates: multiple times per day
- Forecast range: up to 16 days (`forecast_days=16`)

## Notes

- All data is JSON. Parse with `jq` if available, otherwise read raw JSON.
- Hourly data returns large arrays. For quick checks, use `current` parameters. For planning, use `daily`. Use `hourly` only when the user needs detailed breakdowns.
- Combine marine + weather API calls to give a complete picture. Neither alone is sufficient for a full sailing briefing.
- Sea level data approximates tides but does not label high/low explicitly. Derive from local maxima/minima in the hourly array.
- For coastal areas, data accuracy depends on proximity to the nearest grid point. Open ocean coverage is excellent; harbors and bays may be less precise.

Docs: https://open-meteo.com/en/docs/marine-weather-api