Professional Diploma in Extreme Weather on the High Seas
This professional diploma prepares you to understand, anticipate and manage severe weather in open-ocean navigation. You will study the atmospheric and ocean dynamics behind explosive cyclogenesis, tropical cyclones, polar lows and extreme sea states such as rogue waves and cross seas, and learn to read ensemble forecasts, plan avoidance routes, choose between heaving-to and running before a storm and apply safety and communication protocols on board.
Prior knowledge check
These are the skills this program gives you. Tick the ones you already master and we will tell you which part of the syllabus is for you.
You are starting from scratch in this subject. The program is designed precisely for that.
What is the Professional Diploma in Extreme Weather on the High Seas?
This professional diploma is built around one question: what should a ship do when extreme weather threatens it in open water? You will study the physics of the severe atmosphere and the marine boundary layer, explosive cyclogenesis and gap winds; tropical cyclones, their structure, semicircles, track uncertainty and extratropical transition; severe mid- and high-latitude depressions, atmospheric rivers, polar lows and spray icing; storm seas, rogue waves, wave-current interaction, cross seas, green water and parametric rolling; global, regional and wave models, ensembles and GRIB2 data and their limits; avoidance routing, heavy-weather ship handling, cargo accelerations and ports of refuge; and GMDSS, METAREA warnings, the master's authority, crew fatigue and weather-related accident investigation.
What sets this professional diploma apart: it focuses on the ship and the decisions taken on board in extreme weather on the high seas, rather than on general forecasting, coastal impacts or public warning systems; it combines meteorology, sea-state dynamics and ship behavior in heavy weather, including parametric rolling and lashing loads; it trains you to treat forecasts probabilistically and to cross-check models with onboard observations; and the final project is a complete crisis management plan for a ship facing a real or simulated extreme event, from synoptic diagnosis to the emergency briefing for the bridge and the shipowner.
Program highlights
- Severe atmosphere: explosive cyclogenesis, deep convection, squall lines and gap winds over open water.
- Cyclones and storms: tropical cyclones, semicircles, extratropical transition, polar lows and icing.
- Extreme sea states: rogue waves, cross seas, wave-current interaction, green water and parametric rolling.
- Forecast analysis: global and wave models, ensembles, GRIB2 data and known model failures.
- Heavy-weather decisions: avoidance routing, heaving-to or scudding, cargo loads and ports of refuge.
- Final project: a crisis management plan for a ship facing an extreme weather event at sea.
Syllabus of the Professional Diploma in Extreme Weather on the High Seas
8 modules. Select a module to see its content.
Physics of the severe atmosphere and dynamics of the marine boundary layer
- 1.1. Ocean-atmosphere energy transfer: sensible and latent heat fluxes during episodes of high thermal instability
- 1.2. Extreme pressure gradients: surface wind dynamics in very low pressure systems
- 1.3. Stability and deep convection on the high seas: development of supercell cumulonimbus, squall lines and mesovortices
- 1.4. Explosive cyclogenesis (weather bombs): rapid intensification mechanisms, extreme hourly pressure falls and detection guidelines
- 1.5. Katabatic winds and severe gap winds: coastal orographic effects over open water (Papagayo, Tehuantepecer, Bora, Mistral)
- 1.6. The marine boundary layer under gale-force winds: sea spray production, reduced visibility and changes in surface friction
- 1.7. Instrument monitoring in extreme conditions: calibration and response of onboard sensors under violent rolling and heavy spray
- 1.8. Atmospheric instability and marine convection
Tropical cyclones and ocean hurricanes
- 2.1. Genesis and rapid intensification mechanisms: vertical temperature gradient, wind shear and ocean heat content (OHC)
- 2.2. Anatomy of severe cyclones: the eyewall, eye mesovortices, spiral rainbands and destructive wind profiles
- 2.3. Category 4 and 5 cyclones (Saffir-Simpson): historical case analysis and sustained winds versus extreme gusts
- 2.4. Dynamics of the dangerous and navigable semicircles: combined vector forces due to the system's forward speed
- 2.5. Satellite monitoring and hurricane hunters: interpreting SAR, microwave and radiometry imagery and reconnaissance reports
- 2.6. Cones of uncertainty and track spread: analysis of numerical models (GFS, ECMWF) and interpretation of spaghetti plots
- 2.7. Extratropical transition of cyclones: expansion of the wind field, change from warm to cold core and re-intensification in mid-latitudes
- 2.8. Navigating near hurricanes
Severe extratropical depressions and high-latitude storms
- 3.1. Complex frontal systems in mid-latitudes: intense occlusions, fast-moving cold fronts and jet streams
- 3.2. Atmospheric rivers: massive water vapor transport, torrential rain and associated winds over the ocean
- 3.3. The St Jude storm and complex depressions: analysis of destructive extratropical cyclones in the North Atlantic and North Pacific
- 3.4. Polar lows: mesoscale characteristics, sudden development in Arctic and Antarctic seas and difficulty of prediction
- 3.5. Interaction with ice fields: storm dynamics at the ice edge, spray icing and ice accretion on superstructures
- 3.6. Crossing swell and successive storms: superposition of wave systems generated by sequential depressions
- 3.7. Climate variability and storm frequency: the influence of ENSO, the NAO and the AO on the recurrence and intensity of deep lows
- 3.8. Explosive cyclogenesis
Extreme sea states, rogue waves and breaking wave dynamics
- 4.1. Generation of storm seas: significant wave height (Hs), maximum wave height (Hmax) and spectral wave energy in storms
- 4.2. Rogue and freak waves: formation mechanisms, non-linear approaches (solitons) and interaction with strong currents
- 4.3. Wave-current interaction in major storms: steepening of waves by opposing currents (Agulhas, Gulf Stream, Kuroshio) and deepening of the trough
- 4.4. Cross seas: intersecting wave trains at divergent angles, loss of the ship's dynamic stability and emergency maneuvers
- 4.5. Green water: hydrodynamic impact on the bow, hatches, containers and superstructures
- 4.6. Hydrodynamic resonance phenomena: parametric rolling, synchronous rolling and loss of stability on wave crests
- 4.7. Radar wave detection systems: real-time monitoring of the wave spectrum from the bridge using navigation radar
- 4.8. Forecasting rogue waves and cross seas
Numerical model analysis, GRIB2 files and predictability of extreme events
- 5.1. High-resolution global and regional atmospheric models: comparing the biases of GFS, ECMWF (IFS), UKMO, ICON and AROME in severe events
- 5.2. Spectral wave models: analyzing WAVEWATCH III, WAM and SWAN output in intense storm scenarios
- 5.3. Interpreting ensemble forecasts: ensemble members, standard deviation and the probability of extreme gusts
- 5.4. Kinematic charts and thickness maps: identifying cold air advection, tropopause anomalies and cyclogenesis at 500 hPa and 300 hPa
- 5.5. Advanced processing of GRIB2 files: combining layers of 10 m wind, gusts, sea-level pressure, wave height and tidal currents
- 5.6. Model limitations and failures at the mesoscale: underestimation of winds in active cold fronts and severe convective squalls
- 5.7. Cross-validation with onboard sensor data: adjusting forecast bias with real-time barometric, wind and temperature readings
- 5.8. Ensembles and the probability of extreme events
Tactical avoidance routing and ship handling in heavy weather
- 6.1. Principles of avoidance routing: keeping clear of dangerous quadrants and calculating the closest point of approach (CPA) to the center of the low
- 6.2. Operational rules for maneuvering in tropical cyclones: Buys Ballot's law and choosing the escape course according to the semicircle and the ship's speed
- 6.3. Heaving-to versus scudding: assessing hydrodynamic risks, wind and wave direction and engine and steering configuration
- 6.4. Performance curves in extreme conditions: calculating speed loss due to added wave resistance and leeway in severe winds
- 6.5. Using dynamic routing software in storms: optimizing dynamic itineraries with isochrone algorithms under strict safety constraints
- 6.6. Cargo and stowage management in heavy weather: calculating longitudinal, transverse and vertical accelerations to prevent lashing failure
- 6.7. Go / no-go decisions and ports of refuge: assessing operational windows for entering channels, straits and roadsteads in storm conditions
- 6.8. Heaving-to and running before the storm
Emergency communications, SOLAS/IMO protocols and risk management
- 7.1. The Global Maritime Distress and Safety System (GMDSS) in extreme weather: priority reception of gale warnings and MSI messages
- 7.2. Weather warnings and METAREA zones: structure of the official bulletins issued by the specialized meteorological centers
- 7.3. Legal responsibility and the role of the master (ISM Code): the master's authority to deviate for adverse weather and recording in the logbook
- 7.4. Emergency satellite communication systems: backup connectivity (Inmarsat C, SafetyNET, Iridium Certus, Starlink) in degraded marine environments
- 7.5. Voluntary observing ships (VOS): sending SYNOP SHIP reports during extreme events to feed global models
- 7.6. Managing operational stress and crew fatigue: human factors, decision-making under high uncertainty and deck safety protocols
- 7.7. Surveys and investigation of weather-related accidents: analysis of sinkings, cargo shifts and container losses caused by extreme events
- 7.8. Coordination with rescue centers
Integrating project: assessment, routing and crisis management plan for an extreme weather event on the high seas
- 8.1. Selecting the crisis scenario: reconstructing or simulating a real scenario (for example a passage through a Category 5 tropical cyclone or an explosive cyclogenesis in the North Atlantic)
- 8.2. Synoptic analysis and meteorological diagnosis: gathering pressure charts, satellite imagery and GRIB2 files of the event to identify its structure
- 8.3. Assessing the ship's operational limits: ship type, loading condition, maximum usable speed, performance curves and acceleration limits
- 8.4. Designing the tactical avoidance or heave-to strategy: simulating escape routes, defining maneuvering windows and calculating a safe distance from the eye or center of the low
- 8.5. Contingency and onboard safety plan: checklists for securing the deck, lashing cargo, preparing the engines and GMDSS emergency protocols
- 8.6. Preparing the operational report for decision-making: the technical dossier for the bridge and the shipowner (weather emergency briefing)
- 8.7. Presentation of the management plan
- 8.8. Final presentation: defending the navigation and crisis response plan before a panel of merchant navy masters, marine risk assessors and synoptic meteorologists
Duration and format of the Professional Diploma in Extreme Weather on the High Seas
It is 800 hours. Tell us how many you can study each week and we will tell you when you will really finish.
This is the pace at which most students finish. It fits well with the installment plan.
Academic leadership and faculty
The Navalis teaching team: working professionals who teach and supervise the programs.
Dr. Marina AlcoverAcademic Director and Head of Quality Assurance
Eng. Diego CifuentesSenior Lecturer in Naval Welding and Non-Destructive Testing; Head of QA/QC for Welded Joints
Capt. Javier Abaroa (MCA)Senior Lecturer in Ship Handling, Electronic Navigation (ECDIS/Radar/ARPA) and GMDSS; STCW Compliance and Bridge Resource Management Coordinator
Dr. Pau FerrerSenior Lecturer in Naval Architecture and Simulation; Director of the Hydrodynamics and CFD Laboratory
Dr. Nuria LlobregatSenior Lecturer in Marine Meteorology, SAR and Operational Safety; Navigation Risk Management Coordinator
Eng. Javier BañulsSenior Lecturer in Electrical Engineering, Automation and ETO Engineering; Electronic Integration and Engine Alarms Coordinator
Eng. Sofía MarquinaSenior Lecturer in Materials, Composites and Corrosion Protection; Coordinator of the Advanced Paints and Coatings Line
Eng. Tomás RieraSenior Lecturer in Propulsion, Alternative Energy and Hybrid Systems; Energy Performance and Vibration CoordinatorObjectives of the Professional Diploma in Extreme Weather on the High Seas
Career opportunities after the Professional Diploma in Extreme Weather on the High Seas
Questions about the Professional Diploma in Extreme Weather on the High Seas
Extreme weather in open water: explosive cyclogenesis, tropical cyclones, severe extratropical depressions, polar lows, rogue waves, cross seas and the conditions that cause parametric rolling and green water.
On the open sea. Coastal effects appear only where they reach open water, such as gap winds; the core of the program is the ship in heavy weather far from shore.
Those programs center on forecasting and warnings. This diploma uses forecasts as an input and focuses on what happens on board: avoidance routing, ship handling, cargo safety and crisis management.
Yes. You compare global, regional and wave models, interpret ensembles and GRIB2 files and learn where models tend to fail in severe events.
Yes. You study speed loss, parametric and synchronous rolling, green water and the accelerations that act on cargo and lashings, and how they influence the choice between heaving-to and scudding.
You build a crisis management plan for a ship facing a real or simulated extreme event, including synoptic diagnosis, the ship's limits, an avoidance strategy, onboard contingency checklists and an emergency briefing.
Fully online, through a virtual campus available 24/7, with live sessions that are recorded and tutorials with the teaching staff.
The professional diploma comprises 800 hours of study across 8 modules of about 100 hours each and ends with a final project. You can progress at your own pace within the schedule set when you enroll.
More programs in Bridge and navigation
Admission process
No waiting for a call back. If your documents are in order, you can enroll in the same session.
- Profile: aimed at marine meteorologists and oceanographers, masters, bridge officers and maritime operations staff, naval architects interested in heavy-weather loads, marine insurers and risk managers, and researchers. A degree in environmental sciences, oceanography, meteorology or engineering, or demonstrable experience in maritime operations, risk management or climate research, is recommended.
- Language: sufficient command of English to follow the classes and the technical documentation.
- Technical resources: a computer with a camera and microphone, a stable internet connection for video sessions and access to the weather data and routing tools used in the course.
- Admission: online application, review of your profile and a short interview with the academic team.
- 01ApplicationYour details, background and documents.
- 02Instant reviewWe check that everything is complete and in order.
- 03EnrollmentChoose full payment or instalments and reserve your place.
Admission is provisional until the committee validates the documents provided. If you do not meet the requirements, the full amount is refunded.
Ask us before you enroll
Leave your details and admissions will write to you to answer any questions. If you are already sure, you can apply and pay in the same session.