--- title: "Maritime Master - OOW - Reviews, Revenue and Downloads in United Kingdom | Apple App Store" description: "Study faster. Sail safer. Practice radar plotting, run bridge calculations, and master COLREGs, all in one app built for OOW prep and day-to-day reference. Designed for deck cadets, maritime students" --- # Maritime Master - OOW — United Kingdom > Radar, COLREGs, OOW & Calcs ![Maritime Master - OOW App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/37/b2/0a/37b20ad3-65f2-0f09-5c7b-74ea7a0ba8cf/AppIcon-0-0-1x_U007epad-0-1-85-220.png/434x0w.png) **Developer:** [MARITIME MASTER](https://apptail.io/developer/maritime-master-wnNf) (United Kingdom) **Category:** Education **Rating:** 4.7/5 (3 ratings) **Price:** £8.99 **Bundle ID:** com.bottletopstudios.maritime.master.oow **Store:** Apple App Store **Country:** United Kingdom **Version:** 2.3.3 (released 2026-07-01) **Original Release:** 2025-08-01 **Languages:** English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/gb/app/app/id6748314674) **AppTail Page:** [https://apptail.io/app/maritime-master-oow-nnjw/united-kingdom](https://apptail.io/app/maritime-master-oow-nnjw/united-kingdom) ## Maritime Master - OOW Description Study faster. Sail safer. Practice radar plotting, run bridge calculations, and master COLREGs, all in one app built for OOW prep and day-to-day reference. Designed for deck cadets, maritime students, and working officers (OOW, 3/O, 2/O). Radar plotting simulator: Add multiple targets with custom courses and speeds Automatic CPA/TCPA with clear high-risk warnings Relative motion vectors and target trails to visualise situations Training disclaimer: This simulator is for education only and must not be used for real-world navigation or collision-avoidance decisions. Calculation suite: Navigation: Speed–Time–Distance, ETA, Dead Reckoning, Course & Distance (Rhumb Line & Great Circle), Set & Drift & Fix Position Terrestrial & Celestial: Compass Error, Parallel Indexing, Object Distance, Advance & Transfer, Meridian Passage & LOP sight-reduction helper Stability & Ship Construction: FSE correction, Mean Draft, TPC/LCF usage, Trim & VCG Meteorology: True Wind, Barometer corrections, Beaufort scale converter & Tides and Currents Essential learning & reference library: Regulations: SOLAS, MARPOL, STCW, ISM Code, ISPS Code, GMDSS (quick-reference guides) Core nautical knowledge: Passage planning; ECDIS & charts; basic stability; compass deviation Procedures: Emergency procedures; SOPEP & SMPEP; checklists for safe watchkeeping; logbook entries; equipment handover Electronic navigation: AIS data interpretation; ECDIS functions; AIS/MMSI code reference Master the Rules of the Road (COLREGs): Shapes and sound signals International Code of Signals (ICOS) IALA buoyage systems (A & B) Test yourself & prep for exams: Flashcards, ICOS Hangman, and a Buoy Night-Light game OOW progress tracker. Who is it for? Maritime students & deck cadets: build a strong foundation Officers in training: prepare confidently for OOW certification Active deck officers: quick reference, calculation practice, and knowledge refreshers Anyone who wants to learn more about maritime and OOW Download Maritime Master - OOW and advance your maritime knowledge with confidence. ## Maritime Master - OOW Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/47/ae/4c/47ae4c97-1a9a-1b1b-e2d4-0a7693660dfb/Simulator_Screenshot_-_iPhone_17_Pro_-_2025-09-29_at_08.21.17.png/1206x2622.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/29/05/8e/29058e21-113c-92ac-5b0e-5fb66b0d78de/Simulator_Screenshot_-_iPhone_17_Pro_-_2025-09-29_at_08.18.23.png/1206x2622.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/44/99/0d/44990d0c-4a5d-6a9b-fa99-d4495191dc89/Simulator_Screenshot_-_iPhone_17_Pro_-_2025-09-29_at_08.20.02.png/1206x2622.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/e1/5d/a2/e15da21e-e2b5-6298-d25d-7d81544833e1/Simulator_Screenshot_-_iPhone_17_Pro_-_2025-09-29_at_08.19.05.png/1206x2622.png) - [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/86/6c/97/866c97d8-6b78-3c4c-703a-09dbb22a8aca/Simulator_Screenshot_-_iPhone_17_Pro_-_2025-09-29_at_08.21.02.png/1206x2622.png) - [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/1c/cc/b0/1cccb001-fb90-0fb7-f556-b93a2731e113/Simulator_Screenshot_-_iPhone_17_Pro_-_2025-09-29_at_08.18.52.png/1206x2622.png) - [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/46/b4/cb/46b4cb47-adf2-d557-8af0-2bb33b3f37a0/Simulator_Screenshot_-_iPhone_17_Pro_-_2025-09-29_at_08.21.52.png/1206x2622.png) - [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/6a/64/f4/6a64f48f-70b2-1110-0a70-456b4f3900ed/Simulator_Screenshot_-_iPhone_17_Pro_-_2025-09-29_at_08.18.36.png/1206x2622.png) - [Screenshot 9](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/dd/85/49/dd854943-7ab9-d17f-db62-7b9577275559/Simulator_Screenshot_-_iPhone_17_Pro_-_2025-09-29_at_08.21.34.png/1206x2622.png) - [Screenshot 10](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/a5/cb/b8/a5cbb8ac-a2f3-4251-7b6e-b805835c9f4f/Simulator_Screenshot_-_iPhone_17_Pro_-_2025-09-29_at_08.20.25.png/1206x2622.png) ## Maritime Master - OOW Rating Breakdown in United Kingdom - 5 stars: 2 (67%) - 4 stars: 1 (33%) - 3 stars: 0 (0%) - 2 stars: 0 (0%) - 1 stars: 0 (0%) ## Maritime Master - OOW Reviews in United Kingdom ### ***** "Great resource for officers" This is a great app for quick references and calculations. I will be recommending this to my students. It’s a good app to help in exam preparation and officers in training. It would be good to see some more interactive sections as that does really aid learning. The whole app works offline which is a bonus! -- Gwo85, 2025-08-30 [View all Maritime Master - OOW reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews) ## Maritime Master - OOW Discovered Keywords - maritime master - maritime master - oow ## Maritime Master - OOW Available In - [United Kingdom](https://apptail.io/app/maritime-master-oow-nnjw/united-kingdom) - [Chile](https://apptail.io/app/maritime-master-oow-nnjw/chile) - [Norway](https://apptail.io/app/maritime-master-oow-nnjw/norway) - [United States](https://apptail.io/app/maritime-master-oow-nnjw/united-states) - [Azerbaijan](https://apptail.io/app/maritime-master-oow-nnjw/azerbaijan) - [Belgium](https://apptail.io/app/maritime-master-oow-nnjw/belgium) - [Bulgaria](https://apptail.io/app/maritime-master-oow-nnjw/bulgaria) - [Bahrain](https://apptail.io/app/maritime-master-oow-nnjw/bahrain) - [Brunei](https://apptail.io/app/maritime-master-oow-nnjw/brunei) - [Brazil](https://apptail.io/app/maritime-master-oow-nnjw/brazil) - 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