Iran Deck Officer (STCW II/2) Certificate of Competency Examination study plan

Derive the great-circle distance and initial course between three port pairs using haversine and spherical-trigonometry methods, and reconcile the two answers to within 0.5 nautical mile.

Compute a mercator sailing course and distance for two routes and explain why mercator and great-circle results diverge at high latitude.

Solve three dead-reckoning position advances that combine set and drift, current, and leeway, showing the water track and ground track separately.

Sketch the relationship between true, magnetic, and compass bearings and calculate deviation from a known variation and observed compass bearing.

Build a personal one-page formula sheet covering plane, parallel, mercator, and great-circle sailing, and self-test from it without notes.

Plot a coastal passage of at least 30 nautical miles on a training chart, marking course lines, wheel-over points, and no-go areas around charted hazards.

Apply the collision regulations to six written encounter scenarios, stating which rule governs, who gives way, and the required action and timing.

Determine the risk of collision for crossing, head-on, and overtaking cases and justify when a bearing change indicates safe passage.

Identify light characteristics, shapes, and fog signals for vessels in the annexes and match each to the correct rule.

Explain the responsibilities under the general rules on lookout, safe speed, and narrow channels using concrete examples from the plotted passage.

Perform a full terrestrial position fix from three bearings and one running fix, and quantify the cocked hat as a measure of position uncertainty.

Calculate set, rate, and direction of tidal stream from a tidal diamond or stream atlas and apply it to an estimated position.

Demonstrate the operation and limitations of GPS, AIS, echo sounder, and gyrocompass, and list failure modes and cross-check procedures for each.

Draft a bridge watch handover checklist covering position, traffic, machinery status, and standing orders.

Interpret a navigational warning and a charted note, and state how each changes the planned track.

Calculate initial metacentric height from a rolling-period observation and from a small-angle stability calculation, and compare the two results.

Construct a curve of statical stability from KN data for a given loading condition and extract the range of stability and maximum GZ.

Solve three free-surface-effect problems, showing how slack tanks reduce effective GM and what operational action follows.

Compute a final draught and trim after loading a stated weight at a stated position, using a trimming table or moment calculation.

Explain the structural roles of the collision bulkhead, double bottom, and transverse frames, and identify the stresses a loaded hull experiences in a seaway.

Plan the stowage of a mixed general-cargo and container consignment, assigning positions by weight, compatibility, and port rotation.

Interpret a dangerous-goods manifest against segregation requirements and identify every incompatible pairing with the rule that governs it.

Calculate cargo stress on tank tops and deck loadings and state when the planned stow exceeds the permitted limit.

Explain the hazards of cargo liquefaction, grain shift, and moisture migration, and list the precautions and documentation each requires.

Draft a cargo-securing plan referencing lashing calculations and the relevant code requirements for heavy units.

Trace the fuel-oil, cooling-water, and lubricating-oil systems from tank to consumer and state the alarm and trip setpoints for each.

Explain the operation of the steering gear, including the requirement for duplicate power units and the emergency steering drill procedure.

Diagnose three written machinery-failure scenarios and state the immediate bridge action, the report to be made, and the follow-up check.

Execute the decision sequence for abandoning ship, fire in the engine room, and collision with flooding, naming the responsible person at each step.

Apply MARPOL Annex I and Annex IV requirements to a written oily-water and sewage scenario, identifying the records and discharge limits involved.

Decode a synoptic chart and a station model, and forecast the likely wind shift and visibility change over the next 12 hours with stated reasoning.

Describe the formation, sectors, and avoidance strategy for tropical revolving storms in the Arabian Sea and Gulf of Oman, and state the warning signs available to a ship.

Draft and transmit a distress, urgency, and safety message using correct GMDSS priority and standard marine phraseology, and read back a received message accurately.

Summarise the survey, certification, and manning obligations that apply to a vessel under STCW and the flag-state requirements, naming the certificate and its validity.

Explain the master's obligations and the reporting chain for a marine casualty, including the records that must be preserved.

Complete two full timed mock examinations under exam conditions and score each domain separately to expose remaining weak areas.

Re-solve every mock question answered incorrectly, writing the correct method and the reason for the original error.

Recite the collision-regulation rules most often misapplied, and apply them again to four fresh encounter scenarios without notes.

Re-run one stability and one navigation calculation from memory, checking against the week 1 and week 4 worked answers.

Compile a final one-page revision sheet of formulas, limits, and rule numbers, and confirm each entry against a worked example.