NDLSK

Useful things, made carefully.

A living space for practical tools, careful systems, useful notes, and digital work. Calm on the surface, structured underneath, and built to be worth returning to.

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2 projects · 3 posts

Working shelf

Useful tools, careful systems, and notes worth keeping.

NDLSK gathers the things I want to build properly: focused tools, working websites, technical notes, quiet experiments, and the small details that make digital work feel clear and reliable.

2
live projects
3
published posts
RSS
plus Telegram updates
Projects View the work Tools, websites, services, and systems built with care. Notes Read the writing Guides, decisions, observations, and things worth keeping. Updates See what changed New tools, notes, releases, and small public improvements.

Featured work

The first project is not here as a decoration. It solves a specific workflow, has enough finish to be used by real people, and shows how I approach product work: calm interface, clear logic, careful details.

  • UX
  • Frontend
  • Calculation logic
  • Data visualization
Marine tool Live

Deviation Calculator

A specialist marine utility that turns a compass swing into a clear deviation model. It takes eight observed heading errors, calculates the A/B/C/D/E coefficients, draws the curve, and keeps the result readable enough for an actual navigation workflow.

  • Transforms raw compass readings into a usable correction model
  • Visual curve, coefficients, residuals, and table stay connected
  • Designed for clarity under a real-world marine workflow, not as a generic form
  • Marine operations
  • Navigation math
  • Decision tool
Open tool Read guide

Website system

The site is part of the work.

NDLSK is not only a front page. It is navigation, content structure, metadata, RSS, sitemap, social previews, legal pages, and a publishing flow that keeps the whole site maintainable.

View the system Read intro

Website system

NDLSK

  • Content architecture for projects, guides, notes, categories, tags, and legal pages
  • Search and sharing foundations: metadata, sitemap, RSS, social previews, and canonical paths
  • Publishing pipeline that can announce new work through Telegram without turning the site into a manual chore

Latest

Recent updates from the shelf.

A quick feed of what changed recently: new tools, notes, releases, and small improvements that keep the public side alive.

  1. Guides · May 23, 2026 Magnetic Compass Deviation A practical guide to magnetic compass deviation, compass swing readings, and the NDLSK calculator that turns observed errors into a deviation curve.
  2. Tools · May 23, 2026 Deviation Calculator Calculate magnetic compass deviation coefficients from eight compass swing readings and turn them into a curve, table, and quick model check.
  3. Notes · May 22, 2026 The Meaning Behind the NDLSK Logo A short look at the ideas behind the NDLSK logo: a lighthouse, green light, initials, and digital roots.
  4. Notes · May 21, 2026 What NDLSK Is A first note about NDLSK, the things I want to keep here, and why this place exists.