Q: You hold an OOW < 500 GT Near-Coastal certificate. Your examiner asks you to describe what this certificate permits you to do and what it does NOT allow.

STCW Regulation II/3 OOW Near-Coastal certificate permits: watchkeeping officer duties on ships of less than 500 GT engaged on near-coastal voyages only. Near-coastal: defined by the flag state — in the UK (MCA), near-coastal means voyages within the sea area defined in Merchant Shipping Notice MSN 1861 (MCA-defined near-coastal waters including UK coastal waters, and areas agreed with specific flag states). Limitations: (1) The certificate is NOT valid for unlimited oceans voyages; (2) NOT valid on ships 500 GT or above; (3) The holder cannot act as OOW on international voyages beyond the near-coastal limit without holding STCW II/1 (OOW Unlimited); (4) Near-coastal OOW in STCW covers the STCW II/3 competencies which are the same functional areas as II/1 but assessed at the operational level appropriate to near-coastal operations and vessels under 500 GT. STCW Chapter II Regulation II/3 establishes the mandatory minimum requirements for OOW on ships of less than 500 GT. The near-coastal restriction is defined by each flag state — the MCA defines UK near-coastal as specified in MSN 1861 and related Merchant Shipping Notices. The competency framework for II/3 covers the same seven functions as II/1 (Navigation, Cargo, Stability, Machinery, Electrical, Maintenance, Watchkeeping) but at a level appropriate to smaller vessels on near-coastal voyages. A candidate must be aware: the MCA sometimes accepts STCW II/3 alongside practical endorsements for certain vessel types (fishing, passenger ferries, workboats). The OOW NC holder who works on a 300 GT coastal ferry in UK waters is correctly certificated; the same person who signs as OOW on a 400 GT vessel making a transatlantic passage is operating outside their certificate's geographic scope.

Question 1

Your 280 GT passenger ferry is crossing a busy shipping lane at night. Multiple large vessels are in the lane. You are the give-way vessel. Describe your obligations and how you cross safely.

Accepted Answer

Crossing a shipping lane: COLREGs Rule 10 (Traffic Separation Schemes) applies if you are crossing a TSS — cross at a right angle to the general direction of traffic flow (90° crossing bearing). Rule 15 (crossing situation): your vessel is give-way in crossing situations. Rule 16: give-way vessel must take positive, large, early action to keep well clear. Rule 17: stand-on vessels (large ships in the lane) must maintain course and speed initially but may take action if necessary. Planning: (1) Cross when there is a sufficient gap between approaching ships to complete the crossing before the next ship arrives; (2) Identify each traffic lane vessel on radar; (3) Calculate TCPA for each before committing to the crossing; (4) Cross at maximum speed to minimise time in the traffic lane; (5) Maintain VHF Ch 16 watch and Ch 67 (if TSS); (6) Use correct lights (ship underway — steaming lights); (7) Give a sound signal if doubt exists about another vessel's intentions (Rule 34d — minimum of 5 short blasts). Crossing shipping lanes in a small passenger vessel is a high-risk situation that regularly leads to near-misses and collisions. Rule 10(c): vessels crossing a TSS "shall, if practicable, cross on a heading as nearly as practicable at right angles to the general direction of traffic flow." Right angle crossing minimises the time spent in the lane and makes the crossing vessel's intentions clear to ships in the lane. The critical error candidates make: assuming that passenger ferry services have priority. They do not — Rule 18 gives priority to NUC, RAM, vessels constrained by draft, and fishing vessels over power-driven vessels (which includes ferries). A large container ship in a TSS lane is a stand-on vessel in relation to the crossing ferry. VHF contact: while communicating with approaching vessels is sensible, COLREGs action must never wait for radio agreement — Rule 34 signals and visible manoeuvres are the prescribed communication under COLREGs. An OOW who waits for VHF agreement before taking a COLREGs-required avoiding action may be held at fault if an accident results.

Question 2

You hold an OOW < 500 GT Near-Coastal certificate. Your examiner asks you to describe what this certificate permits you to do and what it does NOT allow.

Accepted Answer

STCW Regulation II/3 OOW Near-Coastal certificate permits: watchkeeping officer duties on ships of less than 500 GT engaged on near-coastal voyages only. Near-coastal: defined by the flag state — in the UK (MCA), near-coastal means voyages within the sea area defined in Merchant Shipping Notice MSN 1861 (MCA-defined near-coastal waters including UK coastal waters, and areas agreed with specific flag states). Limitations: (1) The certificate is NOT valid for unlimited oceans voyages; (2) NOT valid on ships 500 GT or above; (3) The holder cannot act as OOW on international voyages beyond the near-coastal limit without holding STCW II/1 (OOW Unlimited); (4) Near-coastal OOW in STCW covers the STCW II/3 competencies which are the same functional areas as II/1 but assessed at the operational level appropriate to near-coastal operations and vessels under 500 GT. STCW Chapter II Regulation II/3 establishes the mandatory minimum requirements for OOW on ships of less than 500 GT. The near-coastal restriction is defined by each flag state — the MCA defines UK near-coastal as specified in MSN 1861 and related Merchant Shipping Notices. The competency framework for II/3 covers the same seven functions as II/1 (Navigation, Cargo, Stability, Machinery, Electrical, Maintenance, Watchkeeping) but at a level appropriate to smaller vessels on near-coastal voyages. A candidate must be aware: the MCA sometimes accepts STCW II/3 alongside practical endorsements for certain vessel types (fishing, passenger ferries, workboats). The OOW NC holder who works on a 300 GT coastal ferry in UK waters is correctly certificated; the same person who signs as OOW on a 400 GT vessel making a transatlantic passage is operating outside their certificate's geographic scope.

Question 3

You are OOW on a 280 GT passenger ferry making a coastal passage through an area with strong tidal streams of up to 3.5 knots. Your vessel's speed is 9 knots. Explain how you plan for the tidal stream effect.

Accepted Answer

Tidal stream planning: (1) Extract tidal stream data from the relevant tidal stream atlas or chart tables — timing referenced to HW at the nearest standard port; (2) Calculate the tidal stream vectors for each hour of the passage (direction and rate vary through the tidal cycle); (3) Vector triangle method: plot course to steer (CTS) to achieve the desired track made good — add own ship speed vector and tidal vector to calculate the heading required to maintain the track; (4) At 3.5 knots tidal stream vs 9 knots own speed, the cross-tide component at 90° would require approximately 23° of course correction; (5) Calculate ETAs using speed made good along track (not ship speed); (6) Identify timing of fair vs foul tide — plan departure to favour the fair tide for the main channel crossing; (7) Check for minimum depth at tidal gates — arrive at the gate when sufficient water depth exists. Tidal stream planning is a core near-coastal navigation competency. The vector triangle: the navigator must draw (or calculate) three vectors — the water track (direction and speed of the ship through the water), the tidal vector (direction and rate of tidal stream), and the resultant ground track (the actual path made good over the seabed). To maintain a specific ground track, the ship's heading must be adjusted to compensate for the tidal set. The correction formula: if tidal stream is perpendicular to the track at 3.5 knots and own speed is 9 knots, sin(correction angle) = tidal component / own speed = 3.5/9 = 0.389, correction ≈ 23°. At near-coastal OOW level, the examiner expects: (a) knowledge of tidal stream atlases and use of interpolation between hourly vectors; (b) understanding of spring/neap tidal differences; (c) awareness of "tidal gates" — points in the route where passage is only possible at certain states of tide due to depth or current strength. UK examples: Portland Race, Alderney Race, Pentland Firth — areas where strong tidal streams create dangerous conditions for small vessels.