Question 1

A pilot boards your vessel for a port approach. The pilot appears to be making navigational decisions you believe are unsafe. At what point and how do you intervene?

Accepted Answer

MASTER-PILOT RELATIONSHIP — MAINTAINING COMMAND: LEGAL FRAMEWORK: the pilot is a COMPULSORY PILOT under port state regulations. Under international maritime law (UNCLOS, MSA 1995 Section 22): the pilot does NOT relieve the master of responsibility for the safe navigation of the vessel. The pilot is a guide/advisor. The master retains COMMAND. INITIAL RESPONSE — CHALLENGE RESPECTFULLY: if you observe a concerning decision: (1) QUERY IMMEDIATELY: "Pilot, I'm concerned about [specific observation]. Can you explain the plan?" Give the pilot the opportunity to explain — local knowledge may justify what appears unsafe; (2) MASTER-PILOT EXCHANGE (MPE): the MPE at embarkation should have covered: pilot's plan, abort points, tug deployment, critical speeds, communications. Was the pilot's current action discussed in the MPE?; (3) ESCALATE IF NOT SATISFIED: if the pilot's explanation doesn't resolve the concern — ESCALATE: "Pilot, I'm not comfortable with this approach. I recommend we reduce speed / alter course to [X] / abort and return to the anchorage."; (4) FORMAL OBJECTION: if the pilot continues with an action you believe is unsafe — formally state: "Pilot, as Master I am taking charge of this vessel. [Issue helm/engine order directly.]" Document in the log immediately; (5) CONSEQUENCES OF TAKING OVER: this is a significant step — the pilot may protest, VTS may query, the harbour authority may be involved. But if the alternative is a grounding or collision — it is the correct decision; (6) MASTER's ABSOLUTE AUTHORITY: the master's authority to override the pilot is unconditional in extremis. Courts have upheld this in every jurisdiction. Compulsory pilot liability (option B): MSA 1995 Section 22(7): "The fact that a ship is being navigated in an area and at a time for which a pilotage direction is in force shall not affect any liability of the owner or master of the ship for any loss or damage caused by the ship or by the manner in which it is navigated." This is explicit: the owner/master remain liable even with a compulsory pilot on board. The shipowner cannot claim "the pilot was responsible" to escape liability. Post-incident logging (option D): if the master identifies a dangerous situation and allows it to proceed without intervention, then writes a log entry saying "I had concerns," — this creates evidence of awareness combined with failure to act. In a negligence claim, demonstrating awareness + inaction is worse than demonstrating no awareness. The time to act is BEFORE the incident, not to document concerns and hope it works out. The challenge: the most difficult aspect of the master-pilot relationship in practice is that the pilot has local knowledge the master may lack. The key is a thorough MPE before pilotage begins, so that the pilot's plan is understood and concerns can be raised before the critical phase. Challenging the pilot mid-approach is legitimate but should be done early and professionally — not in a confrontational manner that escalates an already stressful situation. MCA guidance (MIN 527) on master-pilot relationship: the MCA has published specific guidance on best practice for the master-pilot relationship, including the MPE form, and strongly encourages masters to maintain active bridge management during pilotage.

Question 2

Your chief officer presents a completed passage plan for a transatlantic voyage. As Master, describe your approval process and your legal obligations under SOLAS V/34.

Accepted Answer

PASSAGE PLAN APPROVAL — MASTER'S SOLAS V/34 OBLIGATIONS: SOLAS V/34 LEGAL REQUIREMENT: "Prior to proceeding to sea, the master shall ensure that the intended voyage has been planned using an appropriate chart and appropriate nautical publications for the area concerned, taking into account the guidelines and recommendations developed by the IMO." This is an absolute obligation on THE MASTER — not the chief officer. The master cannot delegate this legal responsibility. WHAT THE MASTER MUST VERIFY IN THE PASSAGE PLAN: (1) APPRAISAL: is the passage planned using the correct, up-to-date charts (latest edition, NTM corrections applied)? Have the relevant nautical publications been consulted (Sailing Directions, Light Lists, Tide Tables, NtM, Notices to Mariners)? Have weather routing service recommendations been considered?; (2) PLANNING: is the passage plan complete from berth to berth? Does it include: (a) waypoints with safe clearing bearings or distances; (b) no-go areas clearly marked; (c) abort points — where is the last point at which the vessel can safely alter to an alternative port?; (d) wheel-over positions for planned alterations?; (e) UKC calculations at minimum water depth points?; (f) speed calculations to ensure arrival at pilot station at the correct tidal window?; (3) EXECUTION CHECKS: are monitoring intervals appropriate to the waters transited? Are danger waypoint checks included?; (4) CONTINGENCY: is there a documented contingency plan for engine failure, medical emergency, severe weather forcing diversion?; (5) MASTER'S SIGN-OFF: the master must sign the passage plan, confirming approval. This signature carries legal weight. SOLAS V/34 — master-specific obligation: the explicit requirement is on "the master" — not "the ship" or "the officer." This is personal legal responsibility. The master who signs a passage plan as approved, having not reviewed it, shares liability with the preparing officer if the plan is found deficient after a casualty. MCA prosecutions and MAIB reports have repeatedly identified inadequate passage planning as a contributing cause of casualties. "Berth to berth" planning: IMO Resolution A.893(21) (Voyage Planning Guidelines) establishes the berth-to-berth principle. The passage plan should begin from the departure berth (including departure draught, UKC at the berth) and end at the arrival berth (including tidal window for berth entry, air draught under bridges). An ocean passage plan that starts "at sea" and ends "at pilot station" is incomplete. No-go areas: on ECDIS, no-go areas should be entered as electronic exclusion zones (safety depth, safety contour) so the system triggers an alarm if the vessel approaches. On paper charts — clearly hatched with red ink. Abort points: for any passage dependent on weather windows or tidal conditions, the passage plan must identify the last point at which the vessel can safely alter course to an alternative destination without committing to the original approach. After the abort point, the vessel is committed. Open-ocean exemption (option C): SOLAS V/34 applies to ALL voyages. The standard of planning may vary — an ocean passage requires less frequent position-monitoring intervals than a coastal passage — but the requirement for an approved plan, considering weather, hazards, and contingencies, applies universally.

Question 3

As Master approaching a port where tides are required for adequate depth, your UKC policy allows 10% of the vessel's draught. At a draught of 14.5m, 10% is 1.45m. The surveyed depth is 16.2m. Tidal height at arrival is 0.8m. Can you proceed?

Accepted Answer

UKC CALCULATION AND POLICY APPLICATION: BASIC UKC CALCULATION: Available water depth = Chart depth + Tidal height = 16.2 + 0.8 = 17.0m. Vessel draught = 14.5m. Static UKC = 17.0 - 14.5 = 2.5m. UKC policy requirement = 10% of draught = 1.45m. STATIC RESULT: 2.5m available vs 1.45m required — APPEARS SUFFICIENT. HOWEVER — THE MASTER MUST CONSIDER DYNAMIC UKC FACTORS: (1) SQUAT: at speed in shallow water, the vessel will "sink" relative to the water surface due to Bernoulli pressure reduction. For a vessel of this draught in 17m of water (h/d ratio = 17/14.5 = 1.17 — VERY SHALLOW), squat could be 0.5-1.0m at standard speeds. Use squat formula or company guidance; (2) HEEL ALLOWANCE: if the vessel is turning or wind-heeled, the draught at the low side increases. A 2° list or heel adds ~0.5m to draught at the side; (3) TIDE PREDICTION UNCERTAINTY: is the 0.8m tidal height taken from a standard tidal prediction? In practice, meteorological conditions can reduce tidal height significantly. A strong onshore wind can ADD height; an offshore wind can REDUCE it; (4) CHART DATUM UNCERTAINTY: is the 16.2m from a recent survey? Chart datum may differ from actual current depths in silting areas; (5) WAVE RESPONSE: in swells, the vessel pitches and the bow drops lower — "hogging/sagging" effects; DECISION: with static UKC of 2.5m against 1.45m required — the margin appears sufficient. But with squat at speed potentially 0.5-1.0m, the DYNAMIC UKC may be as low as 1.0-1.5m. If squat approaches 1.0m, the remaining dynamic UKC is 1.5m — which is at the policy limit. RECOMMENDATION: reduce speed to minimise squat, use VHF confirmation of current tidal height, arrive at the shallowest point at maximum tidal height. UKC policy — static vs dynamic: the most common error in UKC calculations is treating static clearance as the only consideration. Modern UKC policies (and class society guidelines) require consideration of: (a) squat — mandatory for any shallow water passage; (b) heel — for vessels making course alterations or with asymmetric loading; (c) wave response — in swell conditions; (d) tidal uncertainty — applying a tidal confidence margin. Squat in shallow water (h/d ratio close to 1.2): with h/d = 1.17, this is critically shallow for squat purposes. At 10 knots, the Barrass formula gives squat ≈ (Cb × V²) / 100 × Sf (where Sf is a shallow water factor approaching 2.0 for h/d