Voyage Data Recorder (VDR) Speed Log NAVTEX - Past Paper - Group 2

**VOYAGE DATA RECORDER(VDR)\ SPEED LOG\ NAVTEX** **GROUP 2** Baculo, Leo Jay P. Bation, Arbie Calumpag, Dale Andrei Candare, Rhizly Brent **OBJECTIVES** **At the end of this discussion, the students are expected to attain the following:** a\. Understand the usage, operation, and purpose of t...

**VOYAGE DATA RECORDER(VDR)\ SPEED LOG\ NAVTEX** **GROUP 2** Baculo, Leo Jay P. Bation, Arbie Calumpag, Dale Andrei Candare, Rhizly Brent **OBJECTIVES** **At the end of this discussion, the students are expected to attain the following:** a\. Understand the usage, operation, and purpose of the navigation devices. b\. Know the IMO regulations that were aligned with the discussed navigation devices. c\. Identify the different types of speed logs and their different way of measuring the speed. **VOYAGE DATA RECORDER (VDR)** \- Often referred to as the "**Black Boxes**" of the shipping industry, collects and store vital data from key sensors and locations around the ship. This data plays a pivotal role in incident investigation. **PURPOSE OF THE VDR** \- to **store data** in a secure and retrievable form for at least 30 days (720 hours) and 48 hours on the long term and the fixed/float-free recording mediums respectively **HISTORY OF THE VDR** The inclusion of the VDR as part of the ship's systems came about after a number of serious maritime incidents in the 1980's and 1990's. This includes one of the most notable incidents which is the sinking of the MS Estonia with 852 people dead. Entering into force in 2000, the International Maritime Organization's (IMO) Maritime Safety Committee (MSC) outlined the requirements for ships to carry VDRs as a way to understand the root cause(s) of maritime accidents. **OPERATION** **1. Power On:** Locate the power switch on the VDR unit and turn it on. The unit should initialize and display the main menu or status screen. **2. Configuration:** If necessary, configure the VDR settings according to your vessel\'s specific requirements. This may include: - Setting up communication parameters for data transfer. - Configuring sensor interfaces to ensure proper data acquisition. - Setting the VDR\'s time and date. **3. Data Recording:** The VDR should start recording data automatically once configured. You can verify the recording status by checking the status screen or logs. **4. Data Retrieval:** To retrieve data from the VDR: - Connect the VDR to a computer using the specified interface (e.g., USB, Ethernet). - Use the provided software or a compatible data analysis tool to access and download the recorded data. - Follow the software\'s instructions to extract the desired data and analyze it. **5. Maintenance:** - Regularly check the VDR\'s status and ensure that it is functioning correctly. - Perform routine maintenance tasks as recommended in the user manual, such as cleaning the unit and checking connections. - Back up the VDR\'s configuration settings and any important data to prevent loss in case of a system failure. **Specific Features and Functions:** **Data Logging:** The DM-1000 records a wide range of data, including vessel speed, course, rudder position, engine RPM, bridge audio, and navigation equipment data. **Event Logging:** It can automatically log specific events, such as alarms, warnings, or emergency procedures. **Data Analysis:** The VDR\'s data can be analyzed using specialized software to reconstruct the vessel\'s activities and identify potential causes of accidents or incidents. **Tamper-Proof:** The VDR is designed to be tamper-proof, ensuring the integrity of the recorded data. **WORKING PRINCIPLE** Image **IMO REGULATION** \- Chapter V on Safety of Navigation on the International Convention for the Safety of Life at Sea, 1974 (SOLAS) **SPEED LOG** \- also known as ship logs, chip logs, or common logs, **measures the speed** of a **vessel**. The speed is determined with reference to water flowing by the hull (water reference speed) or to the seabed (ground reference speed). **BRIEF HISTORY OF SPEED LOG** In the age of sailing, they already used logs to measure the speed. Thus, they would tie a rope around a log, put several knots in and throw it overboard. The speed was measured by the total number of knots passing by during a specific time span. Today\'s versions are electromagnetic logs (EM logs), doppler logs or ultra speed sensors.  **ELECTROMAGNETIC SPEED LOG** \- The electromagnetic log measures the speed and indicates the traveled distance. It does this by measuring the speed through water from the flow of water at the bottom of the ship and calculates the total distance of navigation. **How Electromagnetic Speed log Works?** - Magnetic Field Generation - Water as Conductor - Electromagnetic Induction - Voltage Measurement - Speed Calculation **DOPPLER SPEED LOG** \- is a device used on ships to measure the speed and direction of water currents relative to the ship's motion. It works by transmitting an ultrasonic signal from the ship's hull into the water, and measuring the frequency shift of the signal as it bounces off particles in the water. **How Dopler Speed log Works?**  **IMO REGULATION** A speed log is required on all passenger ships irrespective of size and on all ships of 300 gross tonnage and upwards. A speed and distance measuring device which indicates speed and distance through water is required by SOLAS Chapter V Regulation 19 Carriage. **OPERATION** **NAVTEX Model:** Furuno FM300 **1. Power On:** Locate the power switch on the FM3000 unit and turn it on. The unit should initialize and display the main menu or status screen. **2. Installation:** Ensure that the speed log transducer is properly installed and connected to the FM3000 unit according to the manufacturer\'s instructions. This typically involves mounting the transducer below the waterline and connecting it using a waterproof cable. **3. Configuration:** If necessary, configure the FM3000\'s settings to match your vessel\'s specific requirements. This may include: - Setting the units of measurement (knots, miles per hour, etc.). - Configuring the alarm settings for speed limits or other conditions. - Adjusting the display settings (brightness, contrast, etc.). **4. Viewing Speed Data:** The FM3000 should display the current speed through the water. You can typically view this information on the main screen or by accessing specific menus. **5. Additional Features:** The FM3000 may offer additional features, such as: - Built-in GPS for position and course information. - Depth measurement. - NMEA output for integration with other marine electronics. - Alarm functions for speed limits or other conditions. **6. Maintenance:** - Regularly check the transducer for any damage or fouling. - Clean the transducer as needed to ensure accurate readings. - Follow the manufacturer\'s recommendations for routine maintenance of the FM3000 unit. **NAVIGATIONAL TELEX (NAVTEX)** NAVTEX, an acronym for Navigational Telex, is the primary method for broadcasting Marine Safety Information (MSI) and an integral component of the Global Maritime Distress and Safety System (GMDSS). Operating in the medium frequency band of 518 kHz, it delivers messages directly to ships, ensuring that mariners are continually informed of weather forecasts, navigational warnings (including those from the World Meteorological Organization), search and rescue notices, and other safety-related information crucial for safe and efficient maritime operations. **PURPOSE OF THE NAVTEX** \- The primary purpose of NAVTEX is to streamline the delivery of safety and navigational information, reducing the need for mariners to monitor distress frequencies manually. Instead, NAVTEX receivers onboard automatically print out messages relevant to their current location, allowing the crew to focus on navigation and vessel operations. **BRIEF HISTORY OF THE NAVTEX** The concept of NAVTEX was developed in the late 1970s. The system was designed to use the telex-over-radio system and was officially adopted as part of the GMDSS by the International Maritime Organization (IMO) in 1988. The system was recognized for its ability to significantly improve maritime safety. By the early 1990s, NAVTEX had become a key component of the GMDSS, with widespread adoption by maritime nations. Since then, the global NAVTEX network has expanded, with stations now covering most of the world's coastal areas where significant shipping activity occurs. The system has been continually updated and refined in that time to improve coverage, reliability, and the quality of information transmitted. **OPERATION** **NAVTEX Model: Furuno NX300** **1. Power On**: Locate the power switch on your NAVTEX receiver and turn it on. **2. Antenna Connection:** Ensure that the antenna is properly connected to the receiver. This is usually a coaxial cable connection. **3. Channel Selection:** Use the channel selection buttons or menu to choose the appropriate NAVTEX channel for your region. This information is typically found in nautical charts or sailing guides. **4. Volume Adjustment:** Adjust the volume to a comfortable level using the volume control. **5. Tuning and Search:** Some models may require manual tuning to the correct frequency. Others have automatic search functions that can find the NAVTEX signal. **6. Message Reception:** Once tuned to the correct channel, the receiver will start displaying and/or announcing received messages. These messages typically include weather forecasts, navigational warnings, search and rescue alerts, and other maritime safety information. **7. Message Storage:** Many NAVTEX receivers have the ability to store received messages for later review. Consult your manual for specific instructions on how to store and retrieve messages. **WORKING PRINCIPLE**  **REGULATION** SOLAS regulation IV/12.2 states that \"Every ship, while at sea, shall maintain a radio watch for broadcasts of maritime safety information on the appropriate frequency or frequencies on which such information is broadcast for the area in which the ship is navigating\".