3.4
128 reviews
10K+
Downloads
Content rating
Everyone
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About this app

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.
Updated on
Oct 19, 2022

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
Learn more about how developers declare sharing
No data collected
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Ratings and reviews

3.4
114 reviews
Takeru Alexander
November 27, 2022
Hot garbage after the update from Edivo to "shellback," but then what else is new with military software. Doesn't open half the time, doesn't download the required update to use the app when it does, can't get past the disclaimer. That's on two devices. Classic case of "fixing" something that wasn't broken, and breaking it in the process.
2 people found this review helpful
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Justin Archer
June 6, 2022
ROR quiz on this app no longer gives you correct answer. Waste of time to use this as a study guide. I will use Martime quiz on Raynor now. Questions there are updated and pictures are more accurate. Best of all, it will give you the correct answer to a question you missed to help with studying.
4 people found this review helpful
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Jeremy Brown
July 11, 2022
Rules of the Road Quiz is not useful. Once you complete the quiz, this is no feedback just completion information. This is not an effective tool for study or improvement.
3 people found this review helpful
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What's new

-- Bug fixes