General Details
Course & Certification:

ID: 6.1.10

Description: Master 200GT/Mate 500GT™ power.

Certification type: Certificate of Competency
A6 booklet.

ISO 9001:2015 compliance course & certification.

Course Length:

A total of 161 hours consisting of;

Pre-Course study = 8 hours.
Theory Class Lessons = 70 hours.
Practical On-Board Lessons = 56 hours.
Home-study = 27 hours.

Capacity of certification:

1. Captain of a sailing vessel up to 200 Gross Tons, with no Length Overall (LOA) limitation, private or commercially registered..

2. Mate/Watchkeeper up to 500GT on sailing vessels, private or commercially registered.

3. Operational limits:

For privately registered sailing vessels: 150Nm from a Safe Haven. **

For commercially registered sailing vessels for charter: 60Nm from a Safe Haven. **

** In Category Waters I, II, III & IV excluding polar waters (this requires an additional Endorsement).

4. Night passages unrestricted.

5. Tidal area with any height or range.

Flag Administration CoC Processes:

When professional crew are applying for a job position on-board a vessel, their certifications are subject to a process of acceptance by the Flag Administration of the vessel.

It should be noted that there is no such thing as a globally accepted Certification of Competency.

Acceptance of professional CoCs are always on a case-by-case basis. It is very important that any professional CoC adheres as close as possible to the STCW Convention for watch-keeping.

As the iymcs professional Certifications of Competency are restricted in their usage, the Flag Administration may consider the following to undertake:

1. Acceptance of the iymcs CoC as is for the position on a particular vessel according to their manning scale requirements.

2. iymcs CoC Endorsed by the Flag for their flagged vessels subject to any restrictions specified by the Flag.

3. iymcs CoC is used to qualify for a Flag Administration issued STCW Coded CoC possibly subject to an oral examination.

4. iymcs CoC is used to qualify as an entry qualification for a higher level CoC course(s).

STCW Code Adherence:

Adheres to the STCW Code II/2 or II/3 on a case-by case basis subject to Flag acceptance or endorsement or recognition.

Trading Area Restrictions: EEA & EFTA, Mediterranean, Baltic, Black Sea.

Certification Revalidation:

Yes required every 5 years from the date of issue.

Sea-time requirements:

Sea Areas Category III & IV:
180 days Onboard Service and 65 days actual sea-time consisting of having logged 2.500 Nm + 8 nights of watch-keeping underway of 4 hrs.


Sea Areas Category I & II:
180 days Onboard Service and 55 days actual sea-time consisting of having logged 2.200 Nm + 8 nights of watch-keeping underway of 4 hrs.

Certification issuing requirements:

For Motor Yachts:
1. Seafarers Medical Certificate.
2. Radio GMDSS Restricted Operators Certificate + Sat-Com OR Radio GMDSS General Operators Certificate.
3. Maritime Business & Law -Level I.
4. Radar Operator/Observer.
5. ECDIS (if the CoC is used for watch-keeping on vessels >300GT).
6. Leadership & Teamwork.
7. Sea-time log book signed-off.
8. Sea-time testimonials signed-off.
9. STCW Basic Safety Training 1978/amend 2010.

Additionally for Commercial Work-boats:
10. Stability -Level I.
11. Deck Rating.
12. Deck Engineer 40GT or 80GT.
13. Light-Cargo Handling.

What does the Certification look like?

iymcs a6 certif

The custom-designed iymcs booklet type certification is stylish and practical. The booklet outer is made of real leather with a sythentic interior that is resistant to water and protects the certificates. It is A6 in size, ideal to be kept in a crew document case or with the boat's documents on the bridge.

The iymcs Certificates are printed to ISO9001:2015 standards, are dual-language and feature extensive security features to security level 3 (Government passports & national Iidentification documents are security levels 1 & 2) and can be used as a personal ID in daily situations. (Nb. It cannot be used instead of a passport/national identity card).

The iymcs Master 200GT/Mate 500GT™ power is the most comprehensive CoC available at this certification level and has set a benchmark standard that is hard to beat. Supported by STCW ancillary courses and sea-time requirements, it enables a clear path to recognition and approvals by Flag Administrations worldwide. This is an important aspect when you are applying for a job.

The Master 200GT/Mate 500GT™ power certificate has two options to choose from, namely: Motor Yachts and Commercial Workboats.
It currently has three types of Endorsements, namely: High-Speed Navigation, UnLimited Oceanic and Polar Ice Navigation. These Endorsements can be added at any time which is a significant advantage for you as your circumstances may change and you may wish to work on other types of vessels or to operate in other sea areas or oceans.

The comprehensive subject matter covered in the iymcs Master 200GT/Mate 500GT™ power certificate has a good level of depth of knowledge which gives you a solid grounded knowledge base which becomes important as you progress up to the higher level certifications such as the Master 500GT. The course is heavily focused upon Safe Working Practises (SWP), Risk Assessments, Watch-keeping requirements, SOLAS, Mini-ISM & ISMS etc. Bridge Resource Management is introduced with a focus upon bridge-team communications. Boat handling is featured including extensive docking practice in all conditions, day & night.

The Society has defined the CoC capacities as being 150Nm from a Safe Haven for crew working both on privately registered power vessels and commercially registered vessels for charter. This extends the operating radius to 300Nm in total.

The CoC is dual-role (often known as polyvalent) and also has a watch-keeping capacity up to a vessel of 500 Gross Tons. It is used extensively to work as a 1st Mate or 2nd Mate on these size of vessels. ECDIS is fully supported. Radar is extensively covered, including mini-ARPA and AIS, are incorporated into this course for this reason. The practical course consists of continuous exercises in building a comprehensive skill-set for each student or candidate, command and management skills are developed extensively.

This well-proven course lays down the foundation of career development for crew. This course goes well beyond the normal standards, the results appearing later-on you progress in your career.

Other key features to consider:

The diagram below shows how the Endorsements for this CoC work.

After 20 years in development, the iymcs Master 200GT/Mate 500GT™ is well established and is a long-time favourite of professional deck crew.

What is this?

Our Society, the 'International Yacht Marine Certification Society" (iymcs) operates its entire operations under a Quality Management System (QMS) that is in compliance with the International Standards Organisation (ISO) 9001:2015 amended. Part of this compliance involves full auditing procedures.
This is an important reference and enables us to gain recognitions from maritime admininstrations and marine industry bodies alike. Our Society is ISO9001:2015 certified by the British Standards Institute (BSI) Netherlands. The QMS together with the ISO, ensures that iymcs and its Members operate to the highest standards possible. All our courses, and more importantly the Certifications that we issue, are under ISO9001:2015.
This practise is most unusual for such courses and certifications. Some organisations will claim ISO:9001 adherence but often the reality is it is for a document management process or a similar back-office process instead of for actual operations and/or for Certification issuing.

How much does the course cost?

The following are the recommended iymcs course prices (ex.VAT), prices may fluctuate between Member schools & colleges.

Scandinavia 3.600,-EUR Northern Europe 3.400,-EUR United Kingdom 3.200,-GBP
Southern Europe 3.200,-EUR Middle East 3.000,-USD North America 2.900,-USD
Prices exclude: course books,certification costs,personal travelling costs,course food and course accommodation.

Course Enquiry or Booking.

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Related Courses

Course Syllabus.

( Vers. 1.2. )   Click-on '+' to see Syllabus.

Engines & Propulsion Systems. Nautical terminology. SOLAS general knowledge. Safe Working Practises. Risk Assessments. Essential signal flags & morse code. Watchkeeping basic procedures. Introduction to Stability. Principles of the IRPCS.

All the Rules 1 to 37 + Annex IV. All sound & light signals. All day-shapes. Morse code & signal flags: A, B, C, D, E, L, M, N, O, Q, U, Z..

Buoyage channel layouts. IALA System A & System B. Major & minor systems. Types of buoyage and marks. Buoyage direction. Safe-water marks. Marina port & harbour entry marks. Beach & landing stages layouts. Buoyage lights -Flashing, Occulting & Isophase, Morse U & A. Isolated Danger marks. Beacon types.

Key channel marks & signals. Special vessel day & night signals. Movement control signals. Special channel signs..

All Vessel types & categories. Steaming lights configuration. Anchor lights. Sailing vessels -configurations. Special purpose vessels lights and signals.

Raster Scan Charts (RSC’s) or Electronic Nautical Charts (ENC’s). Mercator projection & scale. Magnification of ENC charts. Int. Chart N° 1 publication. Raster & Vector chart symbols. Topography of land masses. Ports, harbours & bays. Charted depths & contour lines. Types of sea-beds & soundings. Obstructions. Drying heights.

Screen set-up; illumination, contrasts, instrument inputs, system configuration. GNSS data, DOP, satellite position. Distance measuring -using; latitude scale, ruler, measuring tool, cursor & VRM. Measuring angles & bearings using; EBL & cursor. Understanding information boxes. Heads-up & North-up & Course Up. Ground-Stabilised & Sea-Stabilised. Information layers. Route plan.

Lighthouses. Beacons, identification by day. Range/Transits, day & night. Sector lights. Deviation and Variation.

Admiralty List of Lights. Lighthouses identification, heights and distance off. Beacons, identification by day. Range/Transits, day & night. Sector lights. Deviation and Variation. Waypoints - departure & destination. Distance-off waypoints position. Distance & speed measurements. Distance-off from obstructions.

Basic elements of Meteorology. Barometer & Barograph. Mid-temperate systems. Tropical & sub-tropical systems. Wind speed & direction. Beaufort Scale & Douglas Scale. Types of depressions. Frontal Depressions. Types of clouds and altitudes. Buys Ballot laws. Coriolis Rules. Sea & Land Breezes. Wave heights and velocity of. Low & high pressure, wind direction. Headland winds. Mountainous coastline wind effects. Meteo Bulletins & Forecasts. Sources of Meteo Information. How to read meteo forecasts. Types of fog. Formation & types of; rain, mist & snow. Level of confidence factors of Meteo Forecasts. Log book entries.

Official Log Book. Navigation Log Book. Deviation table. Pilot books. Tidal Almanacs. Legal requirements to carry charts & publications. Chart and publication updates - Notice to Mariners. Plotter ENC update requirements.

Local area large scale coastal chart. Chart publication check. Reading information. Exercises; buoyage & marks identification, depth & obstructions, major lights identification. Plotting instruments. Plotting a GPS position from plotter. Transferring waypoints from plotter. Measuring distances. Course & bearing measurement. Projected course track.

Vessel handover & official log book. Vessel familiarization. Safe working areas. Deck obstructions. Muster Stations & Muster Lists. Vessel alarms. Safety Equipment & location of. Cut-offs. Fire detections system. Fire-fighting system.

Life-jackets and Personal Flotation Devices. Safety harnesses & clip-on procedures. Life-raft procedures. Man-over-board procedure & equipment usage. Flares, types of and how & when to use them. Medical kit content. Fuel, gas & electrical cut-offs. Navigation lights. Gas detector & cut-offs. VHF Radio. Electrical Panel -DC & AC. Checking battery levels. Compartment flooding & procedure. Bilge pumps -manual & electrical. Fire extinguishers & engine compartment extinguishing system. For’ard deck and side decks.

Line throwing exercise. Line names.

Port Control. Fuel levels, refueling procedures. Water tank levels & re-filling. Port-holes & windows closure. Stowage check. Power shore-supply cable. Depth & Speed Log instruments. Wind instruments. Plotter. Radar. ECS or/and ECDIS plotters. Set-up of the heading instruments; Satellite, Gyro and Fluxgate. Rudder.

Pre-start checks; oil, coolant and fuel levels. Check sea-cock for cooling system. Check sea-water strainer and clean. Check alternator belt. Throttle controls - cable. Post start-up checks incl. exhaust. RPM gauge and setting speed to. Helm indicator. Cold-water start procedures.

Port Control. Customs Clearance. Rudder check. Wind & waves strength & direction. Depths & obstructions. Other vessel awareness (traffic). Marina port traffic. Request entry or departure from Port Marina Office. Casting-off from the dock methods. How to enter into a port or harbour. Approaches to the dock. Organize & brief crew for docking. Singling-up lines, releasing of. Passerelle stowage. Aft cockpit safety gates.

Slow speed exercises; turning the boat in a confined area, rudder angle effect, narrow channel bends & obstructions, approaching a dock. Autopilot set-up & usage. Twin-engine docking: wind along the dock, wind on the dock, wind off the dock (day & night). Single-engine docking. Command docking. Bow & stern thruster effects. Bow push-on to the dock. Stern-too mooring. Anchor drop mooring. Heavy weather tactics. Use of sea anchors including drogues, warps & parachute

Position awareness exercise using plotter with vector charts + local large paper scale chart. Identify land navigation marks and objects. Referencing position to pilot book. Distance off. Positioning using single visual LOP Positioning using Radar VRM or EBL. Two-visual & three-bearing fix. Running fix. Port or harbour entry, day & night. Depth control. Heading checks, in-line and by bearing using a pelorous ring. Steering a course by GPS Compass and by Magnetic Compass. Fluxgate autopilot course set-up. Calculation of TVMDC. Analysis of data of; COG, SOG, CTW, STW, DOG, DTW. Pilotage plans. Use of waypoints. ETA calculations under sail. Projected course plot clearing obstructions, shallows & headlands. Fuel consumption planning. Course to Steers to offset leeway and tidal stream & current affects.

Boat preparation. Watch duties & allocation of. Watch-keeping briefing. Crew briefing & allocating tasks. Safety aspects & safety equipment checks. Preparation of Pilotage Plans. Interior preparation. Galley preparation of light snacks and drinks.

NOAA & UKHO systems. Tidal height adjustments. Standard tidal curves. One-Quarter/One-Tenth Curve. Table 3. Tidal Streams & Tidal Currents. Top-surface currents. The use of tidal almanacs. Chart Datum concept. Charted depths. Depth contour lines. Drying heights. Calculating time of float-off aftergrounding. Calculating clearance time to cross a harbour bar. Calculating height clearance under a bridge or cables. Calculating a spot depth for anchoring as close to a shoreline. Sea-bed characteristics. Tidal Diamonds. Tidal stream atlases.

Identify type of anchor on-board. Anchor chain/rope length, secure of. Use of Capstan. Exercise of partially lowering and raising anchor in port. Anchoring exercise in sheltered bay. Weighing anchor and departure of an anchorage. Picking up a buoy technique, securing and releasing of mooring line.

Rule 1 application for entering bays, harbours & roadsteads. Rule 2 for making a departure of the rules to avoid immediate danger. Rule 3 for vessel identification. Rule 5 for maintaining a look-out. Rule 6 for maintaining a safe speed. Rule 7 for risk of collision. Rule 8 for actions to avoid collision. Rule 9 for narrow channels. Rule 10 for operating in TSS & VTS. Rule 13 applied in overtaking. Rule 14 applied in head-on or nearly head-on when under power. Rule 15 applied when crossing with another vessel/s. Rule 16 applied as in give-way v/l. Rule 17 for stand-on v/l’s. Rule 18 for establishing priorities. Rule 19 operating in or near areas of restricted visibility. Sound signals usage whilst underway. Monitoring VHF traffic channels.

Full procedure, with MRCC communication simulation, day & night. Use of dummy preferably, if not fender & bucket. Life saving equipment in the water. Recovery techniques. Life-ring or horshoe practise throwing exercise. In-sight exercise under power; using Andersen turn. In-sight & out of sight exercises under power; using Williamson turn. In-sight & out of sight exercises under power; using Scharnow turn. Out of sight search patterns.

WC issues and dismantling of pump. MARPOL. Galley usage & stowage. Grab-handle points. Using of the companionway steps. Cooking a full meal underway. Provisioning list. Organizing provisioning of the boat.

Coastguard & SAR MRCC. Range of TX & RX. Power output. CH16 usage. Port channels. Distress Mayday. Safety Securite messages. Pan Medico Alert. Call-up for port entry & departure.

Procedures for; grounding, flooding or sinking, engine failure, electrical systems failure, fire. Steering systems failure procedure. Towing a vessel & to be towed.

Basic heat stroke and hypothermia precautions. Sea-sickness.

Communications tender to boat. Launching and recovery techniques. Loading crew into tender.

Passage Planning -near coastal. Creation of working Passage plans. Creation of Summary Passage Plan. Route track planning -near-coastal. Effects of tidal stream & currents. Vessel traffic density.

Official Log Book. Definition of a vessel engaged in Charter. Designated Person Ashore (DPA). Summary Passage Plan submission. Passenger or/and crew max. capacity. Duty of Care. Due Diligence. Legal limitations of a Captain. Introduction to SOLAS. Small Vessel Code. Surveying requirements for a small commercial vessel. Maintenance requirements for a small commercial vessel. Operational limitations. Introduction to Risk Assessments. Introduction to Boat Accounts. VAT & import issues. Introduction to flagging. Customs & health clearance.

Route track plotting. Offshore approach tactics to headlands. Course tracks; actual, projected and historical. Landfall technique for lights, beacons and land objects. Course track adjustments to avoid low pressure systems. Offshore TSS’s.

Principles of Radar operation. System set-up. Screen & keyboard illumination & contrasts. Correct use of range scale. Gain control usage with chart referencing (on auto-tune). EBL & VRM usage. Data boxes. Sea & rain clutter. Heads-up RM, North-Up RM & TM. Sea-stabilised & ground-stabilised. Target & vessel identification. Target aquirement. CPA & TCPA. Collision avoidance. Manual tune. Scanner rotation, wave-length. Turn points & rate of turn. Parallel indexing. Float EBL & VRM. Mini-ARPA & ARPA AIS transponders & receivers.

Line orders. Docking orders. Captain + Mate management. Use of uhf radio. Clearing decks. Guest management. Safety awareness. Mini-ISM and ISMS. Health and Safety interior management.

Battery management system. Shore Supply cable & input. Generator. Master electrical panel. AC electrical panel 220-240 VAC. DC electrical panel 12-24 VDC. Helm electrical panel. Battery cross-over. Starting procedures for battery low tension levels.