5. Only one vessel is permitted to navigate within the Tory Channel Entrance Controlled Navigation Zone, as is shown in Schedule 8, at any one time. 6. The pilot or master (if pilot exempt) of every vessel of 350 gross tonnage or more or a tug and tow exceeding 40 metres in length when inward bound through the eastern entrance to Tory Channel, must ensure that his or her vessel is on the line of the leading lights when 0.5 nautical mile south-east of a line joining East Head light (K4265) and West Head light (K4262) [Approx. position 41° 13’.05 south 174° 19’.62 east]. 7. The pilot or master (if pilot exempt) of every vessel of 350 gross tonnage or more or a tug and tow exceeding 40 metres in length, when outward bound through the eastern entrance to Tory Channel must ensure that he or she maintains his or her vessel on the line of the leading lights until 0.5 nautical miles south-east of a line joining East Head light (K4265) and West Head light (K4262) [Approx. position 41° 13’.05 south 174° 19’.62 east]. 8. The pilot or master (if pilot exempt) of every vessel of 350 gross tonnage or more or tug and tow exceeding 40 metres in length when inward bound through the eastern entrance to Tory Channel is prohibited from overtaking another vessel of 350 gross tonnage or more or tug and tow exceeding 40 metres in length in the approaches to the eastern entrance of Tory Channel if it is apparent that the overtaking manoeuvre cannot be completed in sufficient time for the overtaking vessel to be on the line of the leading lights as set out in 4.2.6. 9. The pilot or master (if pilot exempt) of every vessel of 350 gross tonnage or more or tug and tow exceeding 40 metres in length whether inward bound or outward bound through the eastern entrance to Tory Channel, is prohibited from overtaking another vessel of 350 gross tonnage or more or a tug and tow exceeding 40 metres in length in the area between a line drawn in a direction of 320°(T) from Scraggy Point light (K4266) and the point south-east of the position as set out in 4.2.7. 10. The master of every vessel of less than 350 gross tonnage or tug and tow less than 40 metres in length, in observing the requirements of this Part of the bylaw is not permitted to impede the passage of vessels of 350 gross tonnage or more. Cautionary note Failure to receive radio communication should not be construed by any vessel as confirmation that the eastern entrance to Tory Channel is clear. The eastern entrance to Tory Channel should be approached with due caution at all tim es. 4.3. General Requirements 1. No vessel of 500 gross tonnage or more is to pass or overtake another vessel of 500 gross tonnage or more between the hours of sunset and sunrise in Picton Harbour, south of 41° 16’016 south. 2. At times of restricted visibility (as defined in maritime rule, part 22 – Collision Prevention) only one vessel of 500 gross tonnage or more is permitted to navigate in Picton Harbour south of 41° 16’.16 south at any one time. 3. The pilot or master (if pilot exempt) of every vessel of 500 gross tonnage or more must navigate his or her vessel at a proper speed not exceeding 12 knots in Picton Harbour when south of 41° 16’.16 south 4. The master of every commercial vessel shall ensure, when navigating within harbour limits, that: Page 24