OOW Prep
Module 02 · Interactive

Passage Planning Builder

Work through the four SOLAS V/34 stages in sequence. Stage 1 flags what you missed and shows the consequence. Stage 2 calculates UKC for every leg in real time. Stage 3 puts you on passage — cross-track error, tidal gates, decision points. Stage 4 covers monitoring discipline.

What you're practising

The four SOLAS V/34 planning stages in sequence — appraisal sources, UKC calculation from chart depth and tidal height, and on-passage decision-making.

Pass criterion

Name all four stages, calculate UKC correctly (chart depth + tide − draft), and state what to do when the result is below the 1.5m minimum.

SOLAS Chapter V Regulation 34 — Safe Navigation and Avoidance of Dangerous Situations

SOLAS V/34 Stage 1 — Appraisal. Check every information source required before planning the passage. Critical items (marked ★) are mandatory — skipping them triggers a consequence.

5 critical items unchecked

  • Charts — correct scale, corrected edition: Chart correction missed. An uncharted obstruction is on the planned route.
  • Notices to Mariners — weekly corrections checked: New wreck (T) not shown on your chart. You pass over it at LW.
  • Pilot books and sailing directions: Port approach restriction (draught limit at LW) not known until arrival.
  • Weather forecast — passage + 24h margin: Gale warning missed. Vessel sails into Beaufort 9 in the TSS.
  • Tidal atlas and tide tables: Insufficient tidal height at shallowest waypoint — vessel grounds.
  • Port entry guide — lights, buoys, signals: Port closed for dredging — no alternative berth identified.
  • Crew rest hours — STCW compliance: OOW falls asleep on watch. Vessel deviates 3 nm from planned track.

Module 02 — Study Notes

Full written notes covering SOLAS V/34, the four planning stages, chart correction, tidal calculations, under-keel clearance, and contingency planning.

Open Module 02 notes →