# Вахтенный помощник Конвенция + > Convention Plus - Officer of the Watch, Delta test. Questions, answers Canonical page: [https://chrome-stats.com/d/com.cmateapp.deltaoow](https://chrome-stats.com/d/com.cmateapp.deltaoow) ## Overview - **ID:** `com.cmateapp.deltaoow` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** cMate - **Category:** BOOKS\_AND\_REFERENCE - **Downloads:** 1 - **Version:** 1.0.1 - **Last updated:** 2026-07-24 - **First published:** 2024-11-02 - **Publisher country:** RU - **Size:** 89 MB - **Data as of:** 2026-09-04 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.cmateapp.deltaoow) - **Website:** [https://cmateapp.com/](https://cmateapp.com/) - **Privacy policy:** [https://cmateapp.com/policy](https://cmateapp.com/policy) ## Description ATTENTION!!!!
For users from the Russian Federation:
To purchase the application, use the application:
https://play.google.com/store/apps/details?id=com.cmateapp.cmateapps
If you have any difficulties with payment, write to us by e-mail navmateapp@gmail.com, we will tell you how you can purchase the application.

Delta Test (Convention Plus) Deck officer.

The application contains a database of questions and answers to the latest version of the SKI Convention Plus (Delta test). All questions are divided into Categories:
- Officer in charge of a marine vessel with a gross tonnage of 500 or more - level of operation
- Watch assistant to the captain of coastal navigation vessels gross
capacity less than 500 - operating level

The database contains the following sections of questions:
1. Nautical astronomy
2. Electronic positioning and navigation systems
3. Watchkeeping (principles and procedures)
4. COLREG-72
5. IALA. Symbols and abbreviations used on navigation maps.
6. Meteorology
7. Navigation
8. Maneuvering and controlling the ship
9. Actions in emergency situations
10. IMO standard phrases. English language
11. Rules for handling and placement of cargo
12. Stability
13. Transportation of dangerous goods
14. Commercial conditions for the carriage of goods
15. Use of life-saving equipment
16. Preventing sea pollution
17. Compliance with legal requirements

Almost all questions have comments, images, and additional files.

There is a convenient search across the entire database of questions.

There is a training test that you can set up yourself.

IMPORTANT INFORMATION:
1. All questions and answers are taken from open sources on the Internet. There may be errors and the absence of some questions that are present in the original test. Please report any errors or inaccuracies you notice to our e-mail.

2. On older devices, the first launch of the application may take some time (15-30 seconds) due to the creation of a large database of questions. Do not close the application until it is fully loaded. ## Rankings - #3,107,760 — Overall ## Permissions and access ### Permissions - `android.permission.ACCESS_NETWORK_STATE` - `android.permission.INTERNET` - `android.permission.READ_EXTERNAL_STORAGE` - `com.cmateapp.deltaoow.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` ## Similar extensions and apps - [Судоводитель-Конвенция плюс](https://chrome-stats.com/d/biz.litmir.deltanav) — 4,530 users - [Вахтенный Механик. Конвенция+](https://chrome-stats.com/d/biz.litmir.watcheng) — 614 users - [Капитан. Конвенция плюс-Дельта](https://chrome-stats.com/d/com.cmateapp.deltacaptain) — 1 users - [Инженер Конвенция плюс. Дельта](https://chrome-stats.com/d/com.cmateapp.deltaengdept) — 1 users - [Старший Механик Конвенция плюс](https://chrome-stats.com/d/biz.litmir.cheng) — 593 users - [Матрос-Конвенция плюс. Дельта](https://chrome-stats.com/d/biz.litmir.deltaab) — 431 users - [ГМССБ-Конвенция плюс (Дельта)](https://chrome-stats.com/d/biz.litmir.deltagmdss) — 1,066 users - [Дельта тест "Конвенция Плюс"](https://chrome-stats.com/d/com.MikhailRakitin.DeltaTest) — 3,753 users - [Второй Механик. Конвенция плюс](https://chrome-stats.com/d/biz.litmir.delta2eng) — 866 users - [Электромеханик. Конвенция плюс](https://chrome-stats.com/d/biz.litmir.electr) — 387 users - [Судоводитель-Конвенция+ ДЕМО](https://chrome-stats.com/d/biz.litmir.deltanavdemo) — 6,486 users - [Дельта тест - Полярные воды](https://chrome-stats.com/d/com.cmateapp.deltapolar) — 1 users - [cMate - Apps Дельта, Конвенция](https://chrome-stats.com/d/com.cmateapp.cmateapps) — 19,603 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/com.cmateapp.deltaoow)