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Coding · Intermediate

# Extracting navigation records for interactive maps

Parse official nautical data tables and format geographic points for web mapping

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Opens BotBento. Paste the prompt into a bot; nothing is preconfigured.

- When you askSubmit document link or file
- ThenParse coordinates and light patterns
- ResultExport validated map dataset

Turn raw maritime catalog publications and navigational lists into clean spatial datasets. The bot extracts tabular records, standardizes coordinate formats, decodes beacon flash characteristics, and exports structured geographic data ready for web visualization tools.

## Prompt to start with

BotBentoRecommended

```
Parse official maritime navigation tables and catalogs from provided documents. Extract geographic coordinates, landmark names, light colors, cycle timings, and navigational remarks. Standardize latitude and longitude into decimal notation and structure entries into map-ready format. Always present a sample batch and schema for user confirmation before writing changes or saving records to the database.
```

Copy

## Tools it uses

PDF filesBrowserDatabase

## Works with

BotBento

## Tags

- gis
- scraping
- mapping
- geodata
- opendata

## Source

[Show HN: An interactive map of US lighthouses and navigational aids](https://news.ycombinator.com/item?id=46756427)
Hacker News · checked 2026-10-16

Summarized in our own words. Any results described there are the authors’ own, not measured by BotBento.

By BotBento Editorial · Added 2026-10-16 · Updated 2026-10-16 · [Suggest a correction](/contact/)

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