frontpage.
newsnewestaskshowjobs

Made with ♥ by @iamnishanth

Open Source @Github

fp.

Open in hackernews

Show HN: Vector Charts – Add Nautical Charts to Your Web App

https://vectorcharts.com/
4•chrisdalke•9mo ago
(TLDR: I made a new API to render maritime maps. If you just want to scroll around for fun, check out https://app.vectorcharts.com/, a free nautical chart viewer. And if you're interested in using nautical charts in your app, just sign up or reach out at https://vectorcharts.com/contact-us/ - I'd love to help you!)

Hi HN! I'm making Vector Charts, an API product which allows nautical charts to easily be added to web apps. Vector Charts provides a Vector Tile API that you can use to embed nautical charts into any web-based map. We're putting a lot of work into styling and modernizing the map experience so anyone building maritime-related web apps can use charts.

"Nautical Charts" are maritime-specific maps that show the structure of the ocean environment, above and below water. Among other info, they show bathymetry contours, which help avoid boats running aground. They're relied on by both professional and recreational mariners to navigate safely and are a mature technology that's been around for many years.

I've been working in the marine software space for years, and adding nautical charts to web applications is a frequent requirement. But there are a few problems with existing SDKs: First, they're generally too expensive for small web apps, due to the fact that they're designed for safety-critical user interfaces used for navigation on commercial vessels. Second, existing options generally render as raster images, which leads to a blurry or pixelated and cluttered view when used inside a web-based map.

Vector Charts focuses on non-safety-critical web experiences that might benefit from nautical charts, which is a growing segment of the market. We want to be the "Mapbox for Nautical Charts" - The easiest & highest quality option to add nautical charts to a map.

A few examples of where this is useful: A live tracking map for a sailboat race, a watersports logging app, or an unmanned surface vessel C2 software. Anywhere that you're building a web app for a marine setting, nautical charts are likely a better background layer than satellite.

Right now I'm in testing this with customers, improving styling & data quality - So there might be data inconsistencies or missing layers. But the API is live and you can play with it now using the example app!

Comments

chrisdalke•9mo ago
If you just want to play around with the nautical chart rendering, check out https://app.vectorcharts.com/ - A free nautical chart viewer that demonstrates the vector charts API.
chrisdalke•9mo ago
On a technical level, this is a perfect use-case for PostGIS, which I'm a huge fan of.

Charts are hand-authored by government hydrography offices and encoded into a format called "S-57". These files contain spatial data for a small area, and different charts cover different zoom levels. This presents a few problems for web apps: Charts of different intended zoom levels cover other data, the full chart dataset is too large to stream, and charts aren't divided into xyz tiles cleanly.

To solve this, I run a bespoke pipeline which processes all nautical chart data into an internal format using PostGIS. From there, I merge all chart data together, overlaying higher accuracy charts over the lower accuracy charts. The pipeline performs a lot of data validation & reconciliation to remove bad data, then simplifies & renders to vector tiles.

PostGIS is critical to this - I started by using a bunch of python geometry manipulation libraries, and slowly shifted more and more of the processing into SQL queries as I realized how fast and intuitive it is.

Can You Draw Every Flag in PowerPoint? (Part 2) [video]

https://www.youtube.com/watch?v=BztF7MODsKI
1•fgclue•47s ago•0 comments

Show HN: MCP-baepsae – MCP server for iOS Simulator automation

https://github.com/oozoofrog/mcp-baepsae
1•oozoofrog•4m ago•0 comments

Make Trust Irrelevant: A Gamer's Take on Agentic AI Safety

https://github.com/Deso-PK/make-trust-irrelevant
2•DesoPK•8m ago•0 comments

Show HN: Sem – Semantic diffs and patches for Git

https://ataraxy-labs.github.io/sem/
1•rs545837•9m ago•1 comments

Hello world does not compile

https://github.com/anthropics/claudes-c-compiler/issues/1
1•mfiguiere•15m ago•0 comments

Show HN: ZigZag – A Bubble Tea-Inspired TUI Framework for Zig

https://github.com/meszmate/zigzag
2•meszmate•17m ago•0 comments

Metaphor+Metonymy: "To love that well which thou must leave ere long"(Sonnet73)

https://www.huckgutman.com/blog-1/shakespeare-sonnet-73
1•gsf_emergency_6•19m ago•0 comments

Show HN: Django N+1 Queries Checker

https://github.com/richardhapb/django-check
1•richardhapb•34m ago•1 comments

Emacs-tramp-RPC: High-performance TRAMP back end using JSON-RPC instead of shell

https://github.com/ArthurHeymans/emacs-tramp-rpc
1•todsacerdoti•39m ago•0 comments

Protocol Validation with Affine MPST in Rust

https://hibanaworks.dev
1•o8vm•43m ago•1 comments

Female Asian Elephant Calf Born at the Smithsonian National Zoo

https://www.si.edu/newsdesk/releases/female-asian-elephant-calf-born-smithsonians-national-zoo-an...
2•gmays•45m ago•0 comments

Show HN: Zest – A hands-on simulator for Staff+ system design scenarios

https://staff-engineering-simulator-880284904082.us-west1.run.app/
1•chanip0114•46m ago•1 comments

Show HN: DeSync – Decentralized Economic Realm with Blockchain-Based Governance

https://github.com/MelzLabs/DeSync
1•0xUnavailable•51m ago•0 comments

Automatic Programming Returns

https://cyber-omelette.com/posts/the-abstraction-rises.html
1•benrules2•54m ago•1 comments

Why Are There Still So Many Jobs? The History and Future of Workplace Automation [pdf]

https://economics.mit.edu/sites/default/files/inline-files/Why%20Are%20there%20Still%20So%20Many%...
2•oidar•56m ago•0 comments

The Search Engine Map

https://www.searchenginemap.com
1•cratermoon•1h ago•0 comments

Show HN: Souls.directory – SOUL.md templates for AI agent personalities

https://souls.directory
1•thedaviddias•1h ago•0 comments

Real-Time ETL for Enterprise-Grade Data Integration

https://tabsdata.com
1•teleforce•1h ago•0 comments

Economics Puzzle Leads to a New Understanding of a Fundamental Law of Physics

https://www.caltech.edu/about/news/economics-puzzle-leads-to-a-new-understanding-of-a-fundamental...
3•geox•1h ago•1 comments

Switzerland's Extraordinary Medieval Library

https://www.bbc.com/travel/article/20260202-inside-switzerlands-extraordinary-medieval-library
2•bookmtn•1h ago•0 comments

A new comet was just discovered. Will it be visible in broad daylight?

https://phys.org/news/2026-02-comet-visible-broad-daylight.html
4•bookmtn•1h ago•0 comments

ESR: Comes the news that Anthropic has vibecoded a C compiler

https://twitter.com/esrtweet/status/2019562859978539342
2•tjr•1h ago•0 comments

Frisco residents divided over H-1B visas, 'Indian takeover' at council meeting

https://www.dallasnews.com/news/politics/2026/02/04/frisco-residents-divided-over-h-1b-visas-indi...
4•alephnerd•1h ago•5 comments

If CNN Covered Star Wars

https://www.youtube.com/watch?v=vArJg_SU4Lc
1•keepamovin•1h ago•1 comments

Show HN: I built the first tool to configure VPSs without commands

https://the-ultimate-tool-for-configuring-vps.wiar8.com/
2•Wiar8•1h ago•3 comments

AI agents from 4 labs predicting the Super Bowl via prediction market

https://agoramarket.ai/
1•kevinswint•1h ago•1 comments

EU bans infinite scroll and autoplay in TikTok case

https://twitter.com/HennaVirkkunen/status/2019730270279356658
6•miohtama•1h ago•5 comments

Benchmarking how well LLMs can play FizzBuzz

https://huggingface.co/spaces/venkatasg/fizzbuzz-bench
1•_venkatasg•1h ago•1 comments

Why I Joined OpenAI

https://www.brendangregg.com/blog/2026-02-07/why-i-joined-openai.html
30•SerCe•1h ago•26 comments

Octave GTM MCP Server

https://docs.octavehq.com/mcp/overview
1•connor11528•1h ago•0 comments