FCC Exam Question: 46F6

Which of the following statements about Vessel Data Recorders is NOT true?

A. The “Crash Survivable Module” (CSM) retains data for up to 12 hours.
B. The “Data Acquisition Unit” (DAU) may have data storage for as long as 30 days.
C. Data input may include Rudder feedback, Depth of water and Radar.
D. Data input may include Position, Date, MSI information and Audio from the bridge.
Correct Answer: D

Explanation: Vessel Data Recorders (VDRs) capture critical operational data from a ship. Statement D is NOT true because while Position, Date, and Audio from the bridge are standard VDR inputs, the *content* of Maritime Safety Information (MSI) is generally not directly recorded by a VDR. VDRs focus on internal operational parameters and external physical conditions relevant to navigation and incident investigation, rather than the content of incoming safety broadcasts. * **A) The “Crash Survivable Module” (CSM) retains data for up to 12 hours.** This is TRUE. The CSM is designed to protect a minimum of 12 hours of recorded data in extreme conditions (fire, impact, deep water). * **B) The “Data Acquisition Unit” (DAU) may have data storage for as long as 30 days.** This is TRUE. While the CSM holds 12 hours of *survivable* data, the DAU often contains additional non-survivable storage that can retain data for much longer periods (e.g., 30 days) for routine operational review. * **C) Data input may include Rudder feedback, Depth of water and Radar.** This is TRUE. These are essential operational inputs for a VDR, providing information about the ship's control, surrounding environment, and collision avoidance efforts.

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Includes Elements 1, 3, 6, 7R, 8, and 9.