Difference Between Vdr And S-vdr 5i4m2q

IMO Regulations International Standard IMO A.163(78): The IMO resolution A.163(78) requires a (S)VDR, which may be a simplified voyage data recorder (S-VDR), to be fitted to cargo ships above 3,000 gross tonnage. Phasing in the requirement to carry a (S)VDR for cargo ships over 20,000 gross tonnage started at the first docking date after July 1st, 2006, to be fitted by July 1st, 2009 at the latest. Cargo ships above 3,000 gross tonnage need to be fitted with a (S)VDR at the first docking date after July 1st, 2007, should all be fitted out by July 2010. All of NetWave's VDR's are designed with this retrofit market in mind, focussing primarily on cost-effectiveness due to ease of installation, as well as the availability of a full range of plug & play standard-interfaces, eliminating the need to use third party add-on products with associated complexity and risks. VDR and S-VDR The difference between a VDR and a Simplified-VDR mainly relates to the number of recording channels and their characteristics. Both systems require Radar video, Bridge microphones as well as VHF audio, in conjunction with position data, heading and course information, to be recorded for a minimum of 12 consecutive hours. For a 'full fledged' VDR system, the additional compulsory channels to be recorded are expanded to other shipboard systems like echo sounders, propulsion and steering gear, watertight doors, fire– and smoke detection, etc. NetWave's (S)VDRs are designed in a scalable manner in order for both VDR and S-VDR systems to be built from the same components, without the need for 3rd party products, and all in compliance with IMO regulations. For new buildings, a VDR is required. Mandatory Data to be Recorded S-VDR compulsory Data to be recorded Date and Time Position and Datum used Speed Heading

Sensor / IMO Interface MSC.163(78) GPS receiver, NMEA /IEC61162 IMO 5.4.1 GPS receiver, NMEA /IEC61162 IMO 5.4.2 Speed Log or GPS receiver,NMEA /analog IMO 5.4.3 Gyro NMEA /Stepper,

Bridge Audio Communications Audio

Com, Synchro, Analog IMO 5.4.4 Bridge Microphones,Standard IMO 5.4.5 VHF Radio Standard

Radar, IMO 5.4.7, but if no RGB output RGB Radar available to HV/DVI/Composite obtain radar image, AIS as alternative AIS , only if radar image AIS Information NMEA /IEC61162 is not available S-VDR (if NMEA available) Sensor and Data to be recorded IMO Interface MSC.163(78) Echo if NMEA Depth Sounder, available IMO 5.4.9 Alarm if NMEA Main Alarms System, IMO available 5.4.9 Autopilot, if NMEA Rudder order and response IMO 5.4.9 available Engine Control if NMEA Engine order and response System, IMO available 5.4.9 Monitoring if NMEA Hull openings status System, IMO available 5.4.9 Monitoring Watertight and Fire door if NMEA System, IMO status available 5.4.9 Monitoring if NMEA Acceleration and Hull stress System, IMO available 5.4.9 Anemometer, if NMEA Wind Speed and Direction IMO 5.4.9 available

Differences between S-VDR (retrofit) and VDR (new buildings) ITEM S-VDR VDR All the enger Existing cargo ships ships and newly built 3000GT and cargo ships of 3,000 Target upwards GT and upwards (International (International navigation) navigation) Fixed type or Float Capsule Fixed type free type selectable Date and time, Position, Datum, Date and time, Speed, Heading, Position, Datum, Mandatory Bridge audio, VHF Speed, Heading, record data audio, Depth, Main Bridge audio, VHF alarm, Rudder, audio Engine, Hull, Door, Radar Depth, Main alarm, If IEC 61162 Rudder, Engine, Hull stress(if fitted), interface is Hull, Door, Hull Wind(if fitted) available stress, Wind Where there is commercial off-theRadar image Mandatory shelf interface available If radar image is not Not required AIS available (recommended)

S-VDR vs VDR

Simplified Voyage Data Recorder (S-VDR), as defined by the requirements of IMO Performance Standard MSC.163(78), is a lower cost simplified version VDR for small ships with only basic ship’s data recorded. The differences between S-VDR and VDR based on the required data recorded are illustrated on the following table (X indicates mandatory data): Input

VDR

S-VDR

Date and Time

X

X

Ship’s Position

X

X

Speed

X

X

Heading

X

X

Bridge Audio

X

X

Communications Audio

X

X

Radar Data

X

X When no radar signal is available

AIS – (Radar alternative) Acceleration and Hull Stresses (if fitted)

X

Echo Sounder

X

Engine Order and Response

X

Hull Openings (Doors) Status

X

Main Alarms (IMO Mandatory Bridge Alarms)

X

Rudder Order and Response

X

Watertight and Fire Doors Status

X

Wind Speed and Direction

X

Only when they are available on the bridge via an IEC 61162 interface

—There is no principle difference between a voyage data recorder (VDR) and a simplified voyage data recorder (SVDR). The difference is the amount of information required to be recorded. The VDR requires more data to be recorded than the S-VDR. —VDRs : or Voyage Data Recorder is a data recording system designed for all vessels required to comply with the (IMO)'s International Convention (SOLAS) Requirements (IMO Res.A.861(20)) in order to collect data from various sensors on board the vessel. It then digitizes, compresses and stores this information in an externally mounted protective storage unit.

—S-VDR : is not required to store the same level of detailed data as a standard VDR, but nonetheless should maintain a store, in a secure and retrievable form, of information concerning the position, movement, physical status, command and control of a vessel over the period leading up to and following an incident.

SOLAS VDRs Carriage RequirementsUnder regulation 20 of SOLAS chapter V on Voyage data recorders (VDR), the following ships are required to carry VDRs: —enger ships constructed on or after 1 July 2002. —ro-ro enger ships constructed before 1 July 2002 not later than the first survey on or after 1 July 2002. —enger ships other than ro-ro enger ships constructed before 1 July 2002 not later than 1 January 2004. —ships, other than enger ships, of 3,000 gross tonnage and upwards constructed on or after 1 July 2002. —istrations may exempt ships, other than ro-ro enger 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 impracticable. SOLAS SVDRs Carriage Requirements

Data Items That Must be Recorded by the VDR IMO Resolution A.861: 1997[/size][/size]

Data types

Date and time: Referenced to UTC with an indication of the source. The source could be the GPS —Ship’s position: In latitude and longitude with the datum used. The source could be the GPS —Speed: Through water or speed over ground with indication of which it is. The source could be the speed log —Heading: As indicated by the ship’s com. The source could be the gyro com —Bridge audio: As picked up by one or more microphones positioned on the bridge so that conversation at or near the conning stations, radar displays, chart tables, etc., is adequately recorded. As far as practicable, the positioning of microphones should also capture intercom, public address systems and audible alarms on the bridge —VHF communications Relating to ship operations should be recorded —Radar data: Electronic signal information from within one of the ship’s radar installations with recording of all the information which was actually being presented on the master display of that radar at the time of recording

—AIS data: If it is impossible to obtain radar data by using a commercially available interface then AIS target data should be recorded as a source of information regarding other ships. If radar data is recorded, AIS information may be recorded additionally as a beneficial secondary source of information on both other and own ship. AIS data is not mandatory, but an option when it is impossible to obtain radar data by means of a commercially available interface —Additional data: Items listed by IMO with the requirements set out in resolution A.861(20) should be recorded when the data is available in accordance with the international digital interface standard NMEA0183 using approved sentence formatters. The additional data listed by IMO with the requirements in resolution A.861(20) are: – Echo sounder – Main alarms – Rudder order and response – Engine order and response – Hull openings status – Watertight and fire door status – Accelerations and hull stresses – Wind speed and direction —The additional data (any or all) shall only have to be recorded if the data are available on the bridge and the data signals are available in NMEA0183 format. Hence, the principle difference between VDR and S-VDR lays in the requirements for recording of additional data

Data Must be Recorded by SVDRs Recording, bridge and communication audio, radar, position, speed, heading, date and time and, if radar data is not possible, AIS data

The VDR System

May consist of recording control unit , protective storage unit and data acquisition unit, which connected to various equipment and sensors on board a ship [] [/] The protective storage Capsule May be in a retrievable fixed unit or free float unit (or combined with EPIRB) when the ship sunk in marine incident. The last 12 hours of stored data in the protected unit can be recovered and replayed by the authorities or ship owners for incident investigation. Must be provided with radar reflectors and special color and special frequency above the water and sound frequency under the water.