4.3
154 reviews
5K+
Downloads
Content rating
Everyone
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About this app

Seabook is an information and knowledge source for marine professionals, sailors as well as sea enthusiasts. Seabook Master contains comprehensive and detailed information on the profession in a comfortable language with graphics. Seabook fits to use at sea with offline accessibility and best user interface. The tools help navigational and technical computations and conversations at ease.
Updated on
May 17, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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Ratings and reviews

4.3
144 reviews
Arthur D
June 13, 2023
Significant upgrade to the original great reference. Well worth the cost, whether you are a professional mariner or not. After initial review, my only real criticism is the lack of a master symbol definition summary table for the equations shown in the stability chapter. Some sub-sections have symbol definitions and others don't.
22 people found this review helpful
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GREY ASBORNE 5986
March 11, 2022
I give it a 5 star. Looking forward to be better useful tools and learning book. This all in one Book. It has all basic needs and information in maritime learning. I suggest to have a group chat all around the world for this to make it better and better from time to time so that they can suggest also for better viewing and better user interface of this app. So seafarers all around the world can easily adopt all the knowledge and safety to be a professional seafarer. It must have a facebook page.
22 people found this review helpful
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Ozgur Dogan GUNES
April 4, 2022
great suggestions! thank you!
Shinji Aeseki (Villainous Hero)
March 2, 2023
The App is very usefull and the contents are great. But the colregs full version got summarized half way. Then the way points for the great circle calculator are a bit innacurate. So please fix it. Thanks! Ps. I use this to double check my calculation and in class. so helpfull but also made me confused due to some errors...
19 people found this review helpful
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Ozgur Dogan GUNES
March 16, 2023
Dear Shinji Aeseki, Seabook aims to remain as a handbook to reach knowledge easily. Many thanks for the feedback! The GC calculation is based on generic indication.

What’s new

Update of SDK/API to ensure compliance with updated Android devices.

App support

About the developer
OZGUR DOGAN GUNES
ozgur@ozgurdogangunes.com
ŞİFA SK. NO:8/7 MERKEZ CAFERAĞA MAH. 34710 KADIKÖY/İstanbul Türkiye
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