CH09 Constraints on Navigation

Question 1

What is the IMO publication Ships’ Routeing concerned with?

Answer 1

Deep-water routes.
TSS (adopted by the organisation).
Precautionary areas.
Inshore traffic zones.
Areas to be avoided.

Question 2

What publications should a navigator refer to re TSS?

Answer 2

In order of priority.
Ships’ routeing by IMO.
Admiralty Sailing Directions.
Mariners’ Routeing Guides (ie 5500).
Charts (inl charted depths for deep draught vessels).
COLREG, primarily rule 10 but all other steering and sailing rules.

Question 3

What is VTS?

Answer 3

A service which is designed to improve safety and efficiency of vessel traffic and to protect the environment.

Question 4

What does a VTS do?

Answer 4

Provides info on arrival/berthing/anchoring/departure.
Details navigational hazards.
Local weather.
Info regarding port operations.
Monitors traffic with radar and AIS.
Boarding/disembarkation of pilots.
Enforcement of local regulations.

Question 5

What publications should a navigator refer to re VTS?

Answer 5

In order of priority.
Admiralty Sailing Directions.
ALRS 6.
Mariners’ Routeing Guides (ie 5500).

Question 6

What are other areas where restrictions apply to routeing?

Answer 6

Areas to be avoided (ATBA).
Particularly Sensitive Sea Areas (PSSA).
Minefields.
Offshore Renewable Energy installations (OREI).
Offshore Wave and Tidal Energy Installations.
Safety and Exclusion Zones.
Submarine Pipelines and Cables.
Bridges and Overhead Power Cables (HAT).