Age Rating
4+
Apps in this category do not contain restricted content.
9+
Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.
12+
Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.
17+
You must be at least 17 years old to access this App.
Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.
Shellback Screenshots
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About Shellback

What is the Shellback app?
Shellback, formerly known as eDivo, is a free mobile app developed to support US Naval Surface Force (SURFOR) personnel in an easy-to-access offline environment.


What is a Shellback?
In naval tradition, a Shellback is a nickname for a Sailor who has crossed the Equator and thus transitioned from a novice Sailor, or Pollywog, to an experienced Sailor.


Why do I need Shellback?
Shellback provides Sailors the ability to download key SURFOR information on their own portable devices and access it while underway without the need for an internet connection. Shellback provides the most relevant and current information to SURFOR Sailors in one location. Content is scheduled for annual updates.


What type of info can I find in Shellback?
The information in Shellback is separated into several main categories:
Admin/Training: Contains the Correspondence Manual and the SURFOR Training and Readiness Manual.
Medical: Includes the Manual of the Medical Department, information on medical and physical readiness, mental health, Medical Evaluation Board procedures, the Disability Evaluation System, family member readiness, and more.
Operations: Includes information and training on bridge management, navigation basics, watch team tools, crew endurance, operating procedures for air-capable ships, Air Certification for Naval Surface Force Ships, and manuals for amphibs, maintenance, and other general ship operation resources.
Personnel Management: Provides documents on Navy personnel policy and administration. Also includes legal handbooks and manuals, resources for Surface Warfare Officers, and a variety of general personnel management resources.
Safety: Provides documents related to lessons learned, mishap reporting, notices, safety-related awards, and general safety resources.
Rules of the Road: This quiz tests a Sailor’s knowledge of maritime navigation rules.
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What's New in the Latest Version 2.1

Last updated on Oct 19, 2022
Old Versions
-- Bug fixes
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Version History
2.1
Oct 19, 2022
-- Bug fixes
2.0
May 20, 2022
-- Five new sections: Admin/Training, Medical, Operations, Safety, and Ship Operations
-- Updated content, instructions, and PDFs
-- Rules of the Road quiz and much more!
1.7.11
Apr 21, 2017
This app has been updated by Apple to display the Apple Watch app icon.

- Content updates and bug fixes
1.5.1
Apr 19, 2016
-Numerous bug fixes
-Performance improvements
1.2.5
Aug 28, 2015
-Fixed app unresponsiveness on 8.4.1 devices.
-Document manager under settings view.
-Improved calendar controls.
-Misc bug fixes.
-Misc style fixes.
1.1.4
Jul 7, 2015
-Added Feedback view to allow users to send feedback through the Zendesk api on the about view.
-Added rate app option on about view.
-New content on My Bridge Team and Database updates.
-Minor bug and styling fixes.
1.0
Mar 11, 2015

Shellback FAQ

Click here to learn how to download Shellback in restricted country or region.
Check the following list to see the minimum requirements of Shellback.
iPhone
Requires iOS 8.0 or later.
iPad
Requires iPadOS 8.0 or later.
iPod touch
Requires iOS 8.0 or later.

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