Visibility

Web Page Resource

Description

Calculator for determining sea visibility distances based on observer and object heights.

Visibility Distance at Sea: Understanding the Horizon

Visibility Distance at Sea: The Science of Horizon and Object Detection

Content Under Construction

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We're currently updating this guide with detailed diagrams and illustrations to enhance your understanding of visibility at sea.

In the meantime, please enjoy our interactive calculator below and reference the quick formulas in the sidebar.

Quick Visibility Calculator

Use this calculator to quickly determine horizon distance and object visibility based on heights. Adjust the sliders to see real-time changes in visibility distances.

0 25 50 75 100 m
0 125 250 375 500 m

Horizon Distance

8.7 kilometers

Maximum distance you can see to the horizon

Object Visibility

34.0 kilometers

Maximum distance you can see the object

Using formulas: d = 3.57 × √h (km) or d = 2.08 × √h (NM) for horizon distance

Coming Soon: Comprehensive guide with illustrated examples of horizon visibility, object detection, and atmospheric effects.

Please check back soon for the full content!