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The ultimate digital toolkit for comprehensive learning and preparation as an Officer of the Watch. Designed for deck cadets, maritime students, and seasoned seafarers seeking to enhance their knowledge, this is your all-in-one solution for mastering navigation principles, watchkeeping procedures, and excelling in exam preparation.

ADVANCED RADAR PLOTTING SIMULATOR
Sharpen your understanding and application of collision avoidance principles with our interactive radar simulation.
- Dynamic Scenarios: Add multiple targets with custom courses and speeds.
- Automated Risk Assessment: Instantly calculates Closest Point of Approach (CPA) and Time to CPA (TCPA) with clear visual warnings for high-risk targets for educational analysis.
- Visualize Relative Motion: Observe target trails and relative motion vectors (RMV) to build the critical instincts needed for a safe watch. 
Please note: This simulator is for training and conceptual understanding only and should not be used for real-world navigation or collision avoidance decisions.

COMPREHENSIVE CALCULATION SUITE
Practice and verify critical bridge calculations for your studies and training with accuracy.
- Navigation: Speed-Time-Distance (STD), ETA, Dead Reckoning (DR), Course & Distance (Rhumb Line & Great Circle), Set & Drift, and Fix Position.
- Terrestrial & Celestial: Compass Error, Parallel Indexing, Object Distance, Advance & Transfer, Meridian Passage, and a PLOP Sight Reduction Helper.
- Stability & Ship Construction: FSE Correction, Mean Draft, TPC/LCF Usage, Trim, and VCG calculators.
- Meteorology: True Wind, Barometer Corrections, Beaufort Converter, and Tide/Current calculators.

ESSENTIAL LEARNING & REFERENCE LIBRARY
Your digital pocket reference for in-depth maritime knowledge. Get instant, searchable answers to support your learning and professional development.
- Maritime Regulations: Quick-reference guides for SOLAS, MARPOL, STCW, ISM Code, ISPS Code, and GMDSS.
- Core Nautical Knowledge: In-depth sections on Passage Planning, ECDIS & Charts, Basic Stability, and Compass Deviation.
- Procedures: Quick access to Emergency Procedures, SOPEP & SMPEP, and checklists for safe watchkeeping, logbook entries, and equipment handover.
- Electronic Navigation: Master AIS Data Interpretation, understand ECDIS functions, and access AIS and MMSI code references.

MASTER THE RULES OF THE ROAD (COLREGs)
Confidently understand the Rules of the Road (COLREGs) using our complete, easy-to-use module, including detailed guides on Shapes, Sound Signals, the International Code of Signals (ICOS), and international Buoyage systems (IALA A & B).

TEST YOUR KNOWLEDGE & PREPARE FOR EXAMS
Turn study into a challenge and effectively prepare for your OOW certificate with confidence.
- Interactive Mini-Games: Test your recall of signals and buoy lights with Flash Cards, ICOS Hangman, and a Buoy Night Light game.
- OOW Progress Tracker: Monitor your learning and focus your study on areas needing improvement.

WHO IS THIS APP FOR?
- Maritime Students & Deck Cadets: The perfect study partner to build a strong foundation.
- Officers in Training: An essential tool for preparing for OOW certification exams.
- Active Deck Officers (OOW, 3/O, 2/O): A powerful, reference, calculation practice, and knowledge enhancement tool for ongoing professional development.

Download Maritime Master - OOW today and advance your maritime knowledge and skills with confidence!

Master the bridge with Maritime Master - OOW, the ultimate digital toolkit for the modern Officer of the Watch. Designed for deck cadets, maritime students, and seasoned seafarers, this is your all-in-one solution for safe navigation, watchkeeping, and exam preparation.

ADVANCED RADAR PLOTTING SIMULATOR
Sharpen your collision avoidance skills with our interactive radar trainer. This is a hands-on training ground to master ARPA and manual plotting concepts.
Dynamic Scenarios: Add multiple targets with custom courses and speeds.
Automated Risk Assessment: Instantly calculates Closest Point of Approach (CPA) and Time to CPA (TCPA) with clear visual warnings for high-risk targets.
Visualize Relative Motion: Observe target trails and relative motion vectors (RMV) to build the critical instincts needed for a safe watch.

COMPREHENSIVE CALCULATION SUITE
Perform critical bridge calculations in seconds with accuracy.
Navigation: Speed-Time-Distance (STD), ETA, Dead Reckoning (DR), Course & Distance (Rhumb Line & Great Circle), Set & Drift, and Fix Position.
Terrestrial & Celestial: Compass Error, Parallel Indexing, Object Distance, Advance & Transfer, Meridian Passage, and a PLOP Sight Reduction Helper.
Seamanship: Cable Length, Anchoring Checks, Mooring Lines, and Maneuvering Estimation.
Stability & Ship Construction: FSE Correction, Mean Draft, TPC/LCF Usage, Trim, and VCG calculators.
Meteorology: True Wind, Barometer Corrections, Beaufort Converter, and Tide/Current calculators.

ESSENTIAL LEARNING & REFERENCE LIBRARY
Your digital pocket reference for key maritime knowledge. Get instant, searchable answers.
Maritime Regulations: Quick-reference guides for SOLAS, MARPOL, STCW, ISM Code, ISPS Code, and GMDSS.
Core Nautical Knowledge: In-depth sections on Passage Planning, ECDIS & Charts, Basic Stability, and Compass Deviation.
Procedures: Quick access to Emergency Procedures, SOPEP & SMPEP, and checklists for safe watchkeeping, logbook entries, and equipment handover.
Electronic Navigation: Master AIS Data Interpretation, understand ECDIS functions, and access AIS and MMSI code references.

MASTER THE RULES OF THE ROAD (COLREGs)
Navigate with confidence using our complete, easy-to-use COLREGs module, including detailed guides on Lights, Shapes, Sound Signals, the International Code of Signals (ICOS), and international Buoyage systems (IALA A & B).

TEST YOUR KNOWLEDGE & PREPARE FOR EXAMS
Turn study into a challenge and prepare for your OOW Certificate of Competency (CoC) with confidence.
Interactive Mini-Games: Test your recall of signals and buoy lights with Flash Cards, ICOS Hangman, and a Buoy Night Light game.
Exam Simulator: Simulate real test conditions with customizable quizzes of varying lengths (15-65 questions).
OOW Progress Tracker: Monitor your learning and focus your study on areas needing improvement.

WHO IS THIS APP FOR?
Maritime Students & Deck Cadets: The perfect study partner to build a strong foundation.
Officers in Training: An essential tool for preparing for OOW certification exams.
Active Deck Officers (OOW, 3/O, 2/O): A powerful, reliable on-the-job reference and calculation tool.
Download Maritime Master - OOW today and command your watch with confidence!

Master the bridge with Maritime Master - OOW, the ultimate digital toolkit for the modern Officer of the Watch. Designed for deck cadets, maritime students, and seasoned seafarers, this is your all-in-one solution for safe navigation, watchkeeping, and exam preparation.

ADVANCED RADAR PLOTTING SIMULATOR
Sharpen your collision avoidance skills with our interactive radar trainer. This is a hands-on training ground to master ARPA and manual plotting concepts.
Dynamic Scenarios: Add multiple targets with custom courses and speeds.
Automated Risk Assessment: Instantly calculates Closest Point of Approach (CPA) and Time to CPA (TCPA) with clear visual warnings for high-risk targets.
Visualize Relative Motion: Observe target trails and relative motion vectors (RMV) to build the critical instincts needed for a safe watch.

COMPREHENSIVE CALCULATION SUITE
Perform critical bridge calculations in seconds with accuracy.
Navigation: Speed-Time-Distance (STD), ETA, Dead Reckoning (DR), Course & Distance (Rhumb Line & Great Circle), Set & Drift, and Fix Position.
Terrestrial & Celestial: Compass Error, Parallel Indexing, Object Distance, Advance & Transfer, Meridian Passage, and a PLOP Sight Reduction Helper.
Seamanship: Cable Length, Anchoring Checks, Mooring Lines, and Maneuvering Estimation.
Stability & Ship Construction: FSE Correction, Mean Draft, TPC/LCF Usage, Trim, and VCG calculators.
Meteorology: True Wind, Barometer Corrections, Beaufort Converter, and Tide/Current calculators.

ESSENTIAL LEARNING & REFERENCE LIBRARY
Your digital pocket reference for key maritime knowledge. Get instant, searchable answers.
Maritime Regulations: Quick-reference guides for SOLAS, MARPOL, STCW, ISM Code, ISPS Code, and GMDSS.
Core Nautical Knowledge: In-depth sections on Passage Planning, ECDIS & Charts, Basic Stability, and Compass Deviation.
Procedures: Quick access to Emergency Procedures, SOPEP & SMPEP, and checklists for safe watchkeeping, logbook entries, and equipment handover.
Electronic Navigation: Master AIS Data Interpretation, understand ECDIS functions, and access AIS and MMSI code references.

MASTER THE RULES OF THE ROAD (COLREGs)
Navigate with confidence using our complete, easy-to-use COLREGs module, including detailed guides on Lights, Shapes, Sound Signals, the International Code of Signals (ICOS), and international Buoyage systems (IALA A & B).

TEST YOUR KNOWLEDGE & PREPARE FOR EXAMS
Turn study into a challenge and prepare for your OOW Certificate of Competency (CoC) with confidence.
Interactive Mini-Games: Test your recall of signals and buoy lights with Flash Cards, ICOS Hangman, and a Buoy Night Light game.
Exam Simulator: Simulate real test conditions with customizable quizzes of varying lengths (15-65 questions).
OOW Progress Tracker: Monitor your learning and focus your study on areas needing improvement.

WHO IS THIS APP FOR?
Maritime Students & Deck Cadets: The perfect study partner to build a strong foundation.
Officers in Training: An essential tool for preparing for OOW certification exams.
Active Deck Officers (OOW, 3/O, 2/O): A powerful, reliable on-the-job reference and calculation tool.
Download Maritime Master - OOW today and command your watch with confidence!

Master the bridge with Maritime Master - OOW, the ultimate digital toolkit for the modern Officer of the Watch. Designed for deck cadets, maritime students, and seasoned seafarers, this is your all-in-one solution for safe navigation, watchkeeping, and exam preparation.

ADVANCED RADAR PLOTTING SIMULATOR
Sharpen your collision avoidance skills with our interactive radar trainer. This is a hands-on training ground to master ARPA and manual plotting concepts.
Dynamic Scenarios: Add multiple targets with custom courses and speeds.
Automated Risk Assessment: Instantly calculates Closest Point of Approach (CPA) and Time to CPA (TCPA) with clear visual warnings for high-risk targets.
Visualize Relative Motion: Observe target trails and relative motion vectors (RMV) to build the critical instincts needed for a safe watch.

COMPREHENSIVE CALCULATION SUITE
Perform critical bridge calculations in seconds with accuracy.
Navigation: Speed-Time-Distance (STD), ETA, Dead Reckoning (DR), Course & Distance (Rhumb Line & Great Circle), Set & Drift, and Fix Position.
Terrestrial & Celestial: Compass Error, Parallel Indexing, Object Distance, Advance & Transfer, Meridian Passage, and a PLOP Sight Reduction Helper.
Seamanship: Cable Length, Anchoring Checks, Mooring Lines, and Maneuvering Estimation.
Stability & Ship Construction: FSE Correction, Mean Draft, TPC/LCF Usage, Trim, and VCG calculators.
Meteorology: True Wind, Barometer Corrections, Beaufort Converter, and Tide/Current calculators.

ESSENTIAL LEARNING & REFERENCE LIBRARY
Your digital pocket reference for key maritime knowledge. Get instant, searchable answers.
Maritime Regulations: Quick-reference guides for SOLAS, MARPOL, STCW, ISM Code, ISPS Code, and GMDSS.
Core Nautical Knowledge: In-depth sections on Passage Planning, ECDIS & Charts, Basic Stability, and Compass Deviation.
Procedures: Quick access to Emergency Procedures, SOPEP & SMPEP, and checklists for safe watchkeeping, logbook entries, and equipment handover.
Electronic Navigation: Master AIS Data Interpretation, understand ECDIS functions, and access AIS and MMSI code references.

MASTER THE RULES OF THE ROAD (COLREGs)
Navigate with confidence using our complete, easy-to-use COLREGs module, including detailed guides on Lights, Shapes, Sound Signals, the International Code of Signals (ICOS), and international Buoyage systems (IALA A & B).

TEST YOUR KNOWLEDGE & PREPARE FOR EXAMS
Turn study into a challenge and prepare for your OOW Certificate of Competency (CoC) with confidence.
Interactive Mini-Games: Test your recall of signals and buoy lights with Flash Cards, ICOS Hangman, and a Buoy Night Light game.
Exam Simulator: Simulate real test conditions with customizable quizzes of varying lengths (15-65 questions).
OOW Progress Tracker: Monitor your learning and focus your study on areas needing improvement.

WHO IS THIS APP FOR?
Maritime Students & Deck Cadets: The perfect study partner to build a strong foundation.
Officers in Training: An essential tool for preparing for OOW certification exams.
Active Deck Officers (OOW, 3/O, 2/O): A powerful, reliable on-the-job reference and calculation tool.
Download Maritime Master - OOW today and command your watch with confidence!