Shellback 4+

Program Executive Office for Enterprise Information Systems, Sea Warrior Program

Designed for iPad

    • 3.2 • 35 Ratings
    • Free



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.

What’s New

Version 2.1

-- Bug fixes

Ratings and Reviews

3.2 out of 5
35 Ratings

35 Ratings

MuhamadX ,

RoR feature

The RoR feature is a good way to practice, however I wished it would provide feedback with the right answer and maybe even show the rule related to the question from the COLREGs

Erikuchama ,

Not just for divos

A fantastic all-in-one app for any leader in the U.S. Navy. Whether a Divo, Chief, LPO, WCS, or even the fresh-out-of-bootcamp sailor, this app contains references and instructions that are essential for all. If you hate looking up naval instructions on policy, this is the app for you! When new instructions come out, this app updates and you have it available to you. As a Chief, this app has been a great reference tool when questions arise in my divisions.

Caveman724 ,

Rules of the Road and Feedback need improvement

The Rules of the Road quiz portion is a valuable tool to work on skills, but should be updated to show what the correct answer should have been when you get one wrong. On the iPhone 13pro, the app crashes when I try to put my name in the feedback bar, preventing me from actually giving this feedback as actual feedback.

App Privacy

The developer, Program Executive Office for Enterprise Information Systems, Sea Warrior Program, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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