Seabook+

Seabook+

Leading #1 Maritime App

3 ratings
15 reviews
$6.99

Details

Released
June 10, 2020
Updated
April 7, 2026

Features

Seabook+ screenshot #1 for iPhone
Seabook+ screenshot #2 for iPhone
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Seabook+ screenshot #6 for iPhone
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About

This app provides comprehensive maritime information for professionals and enthusiasts. It offers tools for navigational and technical computations, designed for easy use at sea with offline accessibility and a user-friendly interface.

✓Comprehensive maritime information
✓Navigational and technical computations
✓Offline accessibility
✓User-friendly interface
✓Information for marine professionals
✓Knowledge for sea enthusiasts
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What's New in Seabook+

2.0.0

April 7, 2026

Improved User Interface, contents, and reliability.

User reviews

Not useful information

Most Marine professional topics are just copy image of mathematical formulas. The details are sparse to claim this is a mastery material. Not enough depth or breadth on the maritime topic.

Next update

Strange, after the last update v.2.0 the full Colreg text disappeared

Response from developer

Many thanks for your feedback. I am back in action and will be providing more contents with updates. Thanks for your support!

Absolute Scam

The first app which is free immediately directs you to pay for the actual app £6. The app itself very poorly designed and with very little useful information

Response from developer

Seabook has been free since 2013. There are no ads and no subscription. Simply close the pop-up and continue using the app at no cost. Seabook Master is also available, offering additional content and features, with no pop-ups and expanded materials. The app is designed to support maritime education and training, has served the industry for years, and will continue to do so with ongoing upgrades. Please consider Seabook+ for the enriched content. Many thanks for the feedback!

Outdated: navigation doesn’t work

Ironically, I cannot navigate in this app on my iPhone 16. The navigation buttons at the top overlap with iPhone menu bar and don’t respond. The font is also annoyingly large. Please update and also meet Apple’s privacy requirements as indicated in the App Store.

Need update

1.Please update Colreg with rules for sound signals as they are not visible in full version- rules 34,35,36,37
2.You can also include IALA buoyage
3.Please update for the new versions of the phones as my iPhone 15 is impossible to tab on the back button and Content button as they are in my watch and Wifi bar ( top part). To do that I need to turn my phone landscape.
4. Please make Quiz mode for Colreg exams for practice.

Thanks
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Developer apps

FAQ

What is Seabook+ used for?

Seabook+ serves as an information and knowledge source for marine professionals, sailors, and sea enthusiasts. It provides detailed information on the maritime profession and includes tools for navigational and technical computations.

Can I use Seabook+ offline?

Yes, Seabook+ is designed for use at sea and offers offline accessibility. This ensures you can access its comprehensive information and tools even without an internet connection.

What is the price of Seabook+?

Seabook+ is a paid application, with a price of $6.99. This one-time purchase grants you access to its full suite of maritime information and tools.

What devices is Seabook+ compatible with?

Seabook+ is available for iPhone, iPad, and iPod devices. It is designed to provide a seamless experience across these Apple platforms.

What is the age rating for Seabook+?

Seabook+ has an age rating of 12+. This indicates it is suitable for users aged 12 and older, offering content relevant to this age group.

How often is Seabook+ updated?

The latest version of Seabook+ is 1.1, which was last updated on August 8, 2020. Updates typically include improvements to features and content.

What do users like about Seabook+?

Based on the limited ratings, users appreciate the comprehensive and detailed information provided by Seabook+. Its offline accessibility and user-friendly interface are also key benefits for maritime professionals and enthusiasts.

Does Seabook+ have ads?

No, Seabook+ does not contain advertisements. As a paid application, it offers an uninterrupted user experience without any in-app ads.