When a vessel is operating in Auto-DP mode, how is the vessel's heading controlled?, Manually, using the joystick, When in full automatic mode a DP system is controlling:, Surge, sway and yaw, A DP mode whereby a vessel is automatically holding position relative to a mobile target is:, Follow Target/Follow Sub,, What information found on a DP system would a DPO use to determine the best heading to take a minimize power consumption and thruster loads?, Wind/DP current speed and direction, Why is it necessary for a vessel to be in Auto Position mode for a minimum of 30 minutes before starting work, To allow the system's mathematical model to build, As a general rule, control of what axis will receive priority for thrust allocation when in DP mode?, Yaw, Which one of the following sensor is always used in a DP system?, Gyro compass, When the DP system is un full automatic control of vessel, the DP current is:, Determined from the mathematical model, For DP class 2 and 3 operations, at least three Position Reference Systems should be deployed and selected into the DP system. Why should they not all be of the same type?, To protect against common mode failure, If a position discrepancy among three or more Position Reference Systems i the DP system will reject the drifting PRS as a result of the:, Median test, A dual frequency GNSS receiver is used to:, Lock in to a satellite on one channel while scanning on another, What might be the 95 percent accuracy of a Differential Global Navigation Satellite System (DGNSS) using a modern commercial correction subscription service?, Less than 1 meter, Which of the following is NOT a DGNSS quality factor?, Adverse weather conditions, Which of the following may adversely affect the quality and accuracy of positional data provide by satellite-based Position Reference System?, The DGPS antenna being located too high in the vessel., Examples of Positioning Reference Systems (PRS) that can use multiple targets are:, Laser and FMCW radar, If a platform has just one Artemis antenna, how many vessels can be positioned using Artemis as a Position Reference System?, One vessel, What is the maximum practicable range for FMCW Radar Position Reference System such as Radius and RadarScan?, 200-1000m, What is a Fanbeam or Cyscan system?, A laser-based position reference system, During the planning stage of a DP operation, it is essential that:, The system be allowed 30 minutes setting time, The "Autotrack" or "Track Follow" facility on a DP system may be utilized for:, Cable or pipe laying, Whem conducting diving operations from a vessel on DP, The length of the diver umbilical must be:, No more than the distance to the nearest from the umbilical tending-point, minus 5m., The wind sensor "Feed Forward" facility is important because:, It allow the DP system to take immediate action if the wind changes direction and/or speed., What is the function of the Motion Reference Unit?, To measure Pitch, Roll and Heave, The "ROV Follow" mode on DP system may be used for:, Cable and Pipeline Survey, A cable vessel is engaged in plouging operations using "Auto Track" mode. Plough hawser tension is being measured and entered into DP system. If feedback data from the plough hawser tension sensor is lost, then the probable result will be, Plough tension will be displayed by the system as DP Current, A pipelay vessel is engaged in pipe lay operations using DP. In addition to the normal range of position, heading and environmental references, feedback may also be required in respect of:, Vessel draught, from a draught sensor, A vessel is equipped with tow azimuth thruster at the stern. A "Fixed Azimuth "mode is available, when might this be selected?, When the thrusters are continually "Hunting" for direction in the light weather conditions, According to IMO MSC/Circ. 645 of 1994, for what time period should an Uninterruptable Power Supply (UPS) battery system power the DP-computer system following a mains supply failure?, Minimum of 30 minutes, According to IMO MSC/Circ. 645 of 1994, a Power management System is required for which DP classes?, Class 2 and 3, he Uninterruptable Power Supply (UPS) battery system provides a back-up power supply for, DP operator station, control computers, Position Reference System and Sensors

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