16. Coastal Marine Zone Volume Two (c) the speed of the ship over the ground; (d) Ship Speed through the water. 16.4.2.6. Data must be recorded in the Data Recording Devices at a Set Interval of not more than 60 seconds. 16.4.2.7. Plan position must be accurate to within 30m and shall be recorded to a precision of 5m or better. 16.4.2.8. The Data Recording Devices recording of ship speed over the ground and Ship Speed through the water must be accurate to within 0.5 knots and must be recorded to a precision of 0.1 knots or better. 16.4.2.9. The data recorded by the Data Recording Devices must be retained and archived on board the ship in an electronic format readable by the Council for a period of no less than 6 months except where that data is available to the Council via an Automatic Identification System. 16.4.2.10. The Data Recording Devices must be of a type that ensures no data can be manually tampered with and all archived records must be stored in a manner that prevents manual adjustment of data. 16.4.2.11. Where the ship is fitted with equipment capable of transmitting the data recorded in the Data Recording Devices instantaneously to a compatible receiving device held by the Council, the consent holder must ensure that the relevant data specified in Standard 16.4.2.5(a) to 16.4.2.5(d) (inclusive) is transmitted instantaneously to that receiver for the duration of the ship's passage through the National Transportation Route. 16.4.2.12. Where any fault or technical problems occur in the operation of the Data Recording Devices or any related equipment or systems, the consent holder must immediately arrange for the equipment or systems to be serviced and must advise the Council of the fault or problem and the intended programme and time frame to effect the service and any necessary repairs. 16.4.2.13. Where a fault or technical problem affecting the Data Recording Devices or any related equipment or systems results in the Data Recording Devices being inoperable for a period of more than two weeks, the maximum Ship Speed must be limited to 15 knots. Matters over which the Council has reserved control: 16.4.2.14. The duration of the consent. 16.4.2.15. The spatial limits of defined navigation corridors within which a ship is permitted to travel provided that these do not interfere with the safe navigation of the ship and are consistent with national and international regulations. 16.4.2.16. Maximum values of Ship Speed over defined areas within the National Transportation Route. 16.4.2.17. Approved methods, frequency and certification of calibration of the Data Recording Device(s) required by the Plan to measure Ship Speed. 16.4.2.18. The Set Interval for data recorded in the Data Recording Devices. 16.4.2.19. The format, storage method, mode of transmission and frequency of transmission to the Council of the data recorded in the Data Recording Devices. 16.4.2.20. The purpose, timing and criteria for review of any of the conditions of consent. 16 – 10