Question 1

You are using two leading marks in transit (in line) to enter a harbour. What does it mean if the rear mark appears to the LEFT of the front mark?

Accepted Answer

You have moved to the LEFT of the transit line, alter course to starboard. When approaching leading marks to enter a harbour, the rear mark appearing to the LEFT of the front mark means you are LEFT of the transit line. Alter to starboard to regain the line, allowing for wind and tidal stream. If the rear mark appears to the RIGHT, you are RIGHT of the line and should alter to port. When the marks line up, you are on the transit.

Question 2

When manoeuvring in a congested harbour, which factor should primarily dictate speed?

Accepted Answer

The ability to stop the vessel within the distance of visibility and before reaching any obstruction ahead should determine speed.. HARBOUR SPEED: C is the best option because stopping capability and the distance available are central considerations in congested waters. COLREG Rule 6 requires a safe speed that permits proper and effective action to avoid collision and stopping within a distance appropriate to the prevailing circumstances and conditions. It does not prescribe a fixed visibility-based stopping rule. Relevant factors include visibility, traffic density, manoeuvrability, wind, sea and current, nearby navigational hazards and draught in relation to available depth. Observe local speed limits and reduce speed further when conditions require it, while maintaining control and minimising wash. In narrow channels, comply with Rule 9, including its requirements for vessels under 20 metres and sailing vessels not to impede vessels that can safely navigate within the channel.

Question 3

A port shows three red lights in a vertical line at the harbour entrance. What does this signal mean?

Accepted Answer

Vessels must not proceed past the signal into the harbour. Under International Port Traffic Signals, three steady red lights in a vertical line mean vessels shall not proceed. They do not specify the reason for the restriction. Three flashing red lights in a vertical line indicate a serious emergency, and vessels shall not proceed. Consult sailing directions and the port authority for local requirements. The Q flag requests free pratique and is not required merely because a port is unfamiliar.

Pilotage, questions and explanations

You are using two leading marks in transit (in line) to enter a harbour. What does it mean if the rear mark appears to the LEFT of the front mark?

When manoeuvring in a congested harbour, which factor should primarily dictate speed?

A port shows three red lights in a vertical line at the harbour entrance. What does this signal mean?

Practise this properly

Pilotage, questions and explanations

Questions

You are using two leading marks in transit (in line) to enter a harbour. What does it mean if the rear mark appears to the LEFT of the front mark?

When manoeuvring in a congested harbour, which factor should primarily dictate speed?

A port shows three red lights in a vertical line at the harbour entrance. What does this signal mean?

Practise this properly