A Practical Guide to Marine Voyage Data Recorders for Newbuilds ...

More documents

Recommendations

Info

2 CHAPTER 2 Carriage Requirements VDR and S-VDR carriage requirements are spelled out in IMO Resolution A.861 (20), “Standards for Shipborne Voyage Data Recorders.” To assist in casualty investigations, ships, when engaged on international voyages subject to the provisions of regulation 1.4, shall be fitted with a voyage data recorder (VDR) as follows: • Passenger ships constructed on or after 1 July 2002 • Ro-ro passenger ships constructed before 1 July 2002, not later than the first survey on or after 1 July 2002 • Passenger ships other than ro-ro passenger ships constructed before 1 July 2002, not later than 1 January 2002 • Ships other than passenger ships, of 3,000 gross tonnage and upwards, constructed on or after 1 July 2002 Thus, all existing passenger and ro-ro passenger ships, and all new cargo ships of 3,000 or more gross tons built since 1 July 2002, are now required to be fitted with a VDR. The IMO Resolution was amended in 2005 to add the following carriage requirements for retroffiting existing cargo ships with a VDR, which may be a simplified VDR (S-VDR). • In the case of cargo ships of 20,000 gross tonnage and upwards constructed before 1 July 2002, at the first scheduled drydocking after 1 July 2006, but not later than 1 July 2009. • In the case of cargo ships of 3,000 gross tonnage and upwards but less than 20,000 gross tonnage constructed before 1 July 2002, at the first scheduled drydocking after 1 July 2007, but not later than 1 July 2010. Administrations may exempt cargo ships from the application of the carriage requirements when such ship will be taken permanently out of service within two years after the implementation date. Administrations may also exempt ships, other than ro-ro passenger ships, constructed before 1 July 2002 from being fitted with a VDR where it can be demonstrated that interfacing a VDR with the existing equipment on the ship is unreasonable and impractical. The VDR or S-VDR required by these regulations must meet performance standards that are not inferior to those adopted by the IMO, and must be type approved in accordance with procedures spelled out in IMO A.861 (18). Ship Type New ships built on or after 1 July 2002 Passenger VDR VDR Ro-Ro Passenger VDR VDR Cargo Ships over 20,000 grt Cargo Ships 3,000- 20,000 grt Existing ships built before 1 July 2002 VDR S-VDR at 1st drydocking after 1 July 2006, but not later than 1 July 2009 VDR S-VDR at 1st drydocking after 1 July 2007, but not later than 1 July 2010 4 5
3 CHAPTER 3 Performance Standards Detailed performance standards for VDRs and S-VDRs are contained in IEC 61996, published by the International Electrotechnical Commission. The performance standards state that the VDR or S-VDR should continuously maintain sequential records of preselected data items relating to the status and output of the ship’s equipment and command and control of the ship. The specification for S-VDR differs from that for the VDR in two areas: • The requirements for monitoring certain sensors are reduced when the data is not provided in IEC 61162 format. • The requirements for the protective S-VDR capsule are different from the VDR capsule, both for the fixed and float-free versions. Both the VDR and S-VDR are required to record date and time, ship’s position, speed and heading, bridge and VHF audio and radar playback. In the case of the S-VDR, AIS output may be an acceptable substitute for the radar picture under certain circumstances. Additional data sources are required with the full VDR. See Chapter 4 for a detailed listing of VDR and S-VDR interface requirements. The final recording medium for a VDR or S-VDR should be installed in a protective capsule of either a fixed or float-free type, which should meet all of the following requirements: • Be capable of being accessed following an incident but secure against tampering • Maintain the recorded data for a period of at least 2 years following termination of recording • Be fitted with an appropriate device to aid location See Chapter 5 for detailed specifications for protective data capsules. The VDR or S-VDR equipment must be designed so that, as far as is practical, it is not possible to tamper with the selection of data being input to the equipment, the data itself nor that which has already been recorded. Any attempt to interfere with the integrity of the data or the recording should be recorded. The recording method should be such that each item of the recorded data is checked for integrity and an alarm given if a non-correctable error is recorded. To ensure that the VDR or S-VDR continues to record events during an incident, it should be capable of operating from the ship’s emergency source of electrical power. If the ship’s emergency power fails, the VDR or S-VDR should continue to record bridge audio from a dedicated reserve source of power for at least two hours. Recording should be continuous. All stored data items should be retained for at least 12 hours. After that, older data items may be overwritten with new data. 6 7
Page 1 and 2: www.sperrymarine.northropgrumman.co
Page 3: 1 CHAPTER 1 Black Boxes for Ships F
Page 7 and 8: CHAPTER 4 Status and settings of th
Page 9 and 10: 6 CHAPTER 6 Ownership and Recovery
Page 11 and 12: 8 CHAPTER 8 Beyond the Black Box Th

A Practical Guide to Marine Voyage Data Recorders for Newbuilds ...

Create successful ePaper yourself

Delete template?

Save as template?