# Umizaru — Japanese Comics

> Digital comic adaptation of the "Umizaru" manga series about Coast Guard officers. (iPhone/iPad app by Susumu Hoshikawa.)

- Source: https://appshunter.io/ios/app/umizaru/id600724094 (this page in markdown: same URL + `.md`)
- Developer: [Susumu Hoshikawa](https://appshunter.io/developer/413265272)
- Category: Books, Entertainment
- Price: Free with in-app purchases
- Age rating: 12+
- Requires: iOS 16.6 · 5 MB
- Languages: Japanese
- Released: 2013-03-26
- Data updated: 2026-08-13
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/umizaru/id600724094/reviews.md

## What is Umizaru?

The familiar work in movies and dramas! 
The masterpiece, "Umizaru," finally comes up as an iPhone / iPad app! 
It is the elaborating work by Shuho Sato, who is famous with his works, "Give My Regards to Black Jack" and "Tokko no Shima"! "Umizaru" his first serialization work as well as his representative work!

===============
You can enjoy the 1st volume for free! 
The 2nd volume or later will be offered for a fee. 
===============

You can readily enjoy the huge hit record original version as movies and dramas in your iPhone / iPad.
Please try it at this opportunity!

===============
About "Umizaru":
===============

It is the story depicting the activity of the Coast Guard officers mainly on sea disaster accidents with the main character, "Daisuke Senzaki," a Coast Guard officer. 
Some of the incidents and accidents described in the cartoon are the ones, which actually happened. 
Timely topics at that time, such as the spy ships (such as suspicious boats) incident, have also been　incorporated into the story. 
It was serialized in "Weekly Young Sunday," a young cartoon magazine by Shogakukan from 1999 to 2001. 
The series has 12 volumes book (Shogakukan Young Sunday Comics).
It was become a TV drama twice in NHK.
Afterwards, it was picturized by Fuji TV from 2004 to 2012 by a flow: the movie 1 > the TV drama > the movie 2 > the movie 3 > the movie 4.

***************** 
The Title: Umizaru
The Author: Shuho Sato
The Site: Manga on Web (http://mangaonweb.con)
*****************

## Key features

- Digital comic reader
- First volume free
- Purchase subsequent volumes
- Based on popular manga
- Features Coast Guard stories
- Adapted into movies and dramas

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 海猿 第02巻 | $1.99 | one-time |
| 海猿 第03巻 | $1.99 | one-time |
| 海猿 第04巻 | $1.99 | one-time |
| 海猿 第05巻 | $1.99 | one-time |
| 海猿 第06巻 | $1.99 | one-time |
| 海猿 第07巻 | $1.99 | one-time |
| 海猿 第08巻 | $1.99 | one-time |
| 海猿 第09巻 | $1.99 | one-time |
| 海猿 第11巻 | $1.99 | one-time |
| 海猿 第12巻 | $1.99 | one-time |


## Recent user reviews (10 of 34)

All indexed reviews: https://appshunter.io/ios/app/umizaru/id600724094/reviews.md

### 1/5 — クラッシュが止まりません！怒！

*2015-03-25, version 3.0.0*

海猿が手軽に出先で読めるようになった！と、喜んでおりましたが、1~7巻まで、順調に購入しましたところ、突然、簡単にアプリのクラッシュが止まらなくなり、今まで購入した巻数まで全く読めなくなるようになってしまいました。この不具合を至急改善願いたいな。と、強く望む者です。正直な話、このままで放置される様なら購入した分を全額返金願い出たい気持ちで一杯です。

善処願います。
自分の環境は、iPhone6 plus128Gです。iOSは当然最新のものにバージョンアップ済みです。

### 4/5 — どこでも読める！

*2015-01-31*

お手軽でいい‼️

### 1/5 — 金返せ！

*2014-11-05*

アプリを開こうとしても強制終了！！

まじ、最悪

### 5/5 — 良い！

*2014-11-02*

安いし読みやすくてサイコーです！

### 1/5 — 詐欺

*2014-10-06*

以前購入していたが再ダウンロードするよう言われて再ダウンロードしたら課金された。以前全巻購入していたのに金かえせや

### 5/5 — すごく面白かった

*2013-09-16*

映画とは違ったおもしろさがありました😄

### 5/5 — ブラックジャックによろしく以上です

*2013-09-15*

ストーリーの展開が早く、読み飽きることなく進みます。
読み返しても飽きません。
購入して本当に良かったと思います。

### 1/5 — よく落ちる

*2013-09-08*

とても楽しいが、アプリとしてはイマイチ
めくり方も選べないし前回の途中からでも、途中じゃないし改善して欲しい。
海猿は楽しい。

### 4/5 — 商売上手ですなぁ

*2013-08-14*

アプリ自体はサクサク動いていい感じ、本編は更にいい感じ。

一巻から有料だったら誰も買わないだろうけど、こんな素晴らしい作品を一巻だけタダで読ませて続きは有料。

く〜っ、商売上手ですなぁ！

### 5/5 — おもしろいです

*2013-08-02*

動作も軽いし、サクサク読めます。
二巻以降は、料金が発生しますが、値段は、リーズナブルだと思います。

## Frequently asked questions about Umizaru

### What is Umizaru about?

Umizaru is a comic series depicting the activities of Coast Guard officers, primarily focusing on sea disaster accidents. The main character is Daisuke Senzaki, a Coast Guard officer.

### Can I read Umizaru for free?

Yes, you can enjoy the first volume of Umizaru for free. Subsequent volumes are available for purchase within the app.

### Is Umizaru suitable for all ages?

Umizaru has an age rating of 12+, indicating it is suitable for users aged 12 and above. The content may include themes and situations appropriate for this age group.

### What devices does Umizaru support?

Umizaru is available for iPhone and iPad devices, allowing you to enjoy the comic on your Apple mobile devices.

### How often is Umizaru updated?

The latest version of Umizaru is 4.1.0, last updated on March 8, 2026. While specific update frequency for new content isn't detailed, the app receives version updates.

### Where did the Umizaru story originate?

The Umizaru story originated as a manga series serialized in "Weekly Young Sunday" by Shogakukan from 1999 to 2001. It has since been adapted into TV dramas and movies.

### Does Umizaru have ads?

No, Umizaru does not contain advertisements. The app is free to download and offers in-app purchases for additional volumes.

### Who is the author of Umizaru?

Umizaru was created by Shuho Sato, a renowned author also known for works like "Give My Regards to Black Jack" and "Tokko no Shima."

## Version history (last 5 releases)

### 4.1.0 — 2026-03-08

軽微な修正を行いました

### 4.0.0 — 2025-04-15

アプリのデザインを一新いたしました

### 3.3.0 — 2017-05-22

This app has been updated by Apple to display the Apple Watch app icon.

- Support iOS 10.
- Bug Fix.

### 3.2.0 — 2015-09-19

- Add New Contents "Manga on Web".

### 3.1.0 — 2015-07-23

- We have to adjust the design.
- I was corresponding to minor bugs.

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## More apps by Susumu Hoshikawa

- [Give My Regards to Black Jacks](https://appshunter.io/ios/app/give-my-regards-to-black-jacks/id556416566)
- [新・ブラックジャックによろしく](https://appshunter.io/ios/app/id582962918)
- [Tokko no Shima](https://appshunter.io/ios/app/tokko-no-shima/id602560302)
- [Mushoi](https://appshunter.io/ios/app/mushoi/id648195641)
- [Finland Saga -Japanese Comics-](https://appshunter.io/ios/app/finland-saga-japanese-comics/id686332857)

All apps by Susumu Hoshikawa: https://appshunter.io/developer/413265272

## Related topics

[tokio marine seguradora](https://appshunter.io/ios/topics/tokio-marine-seguradora)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-13.*