| Welcome to the Navigation Practice Problem Page...using practice chart 1210TR. Here you will find some basic coastal navigation problems. I hope those of you who are seeking a little practice will find this page useful. Feel free to provide feedback to my email address located on the homepage. |
| Problem 1 Year of Sailing is 2006 Your position is 041d 20.5m N 071d 27.4m W Time is 0300 1a. What is your True Course to Whale Rock Light located at 041d 26.65' N 071d 25.75m W ? 1b. What is the Variation in 2006? 1c. Your CC to Whale Rock Light is 023d, what is the calculated deviation? 1d. What is the distance to Whale Rock Light? 1e. Your boat speed log indicates a boat speed of 8 knots. At the same time, there is a current of 3 knots at 195d True. What is your SOG (Speed Over Ground)? 1f. When will you arrive at Whale Rock Light? |
| Deviation Chart Compass Course Deviation 000 2E 030 4E 060 7E 090 1E 120 3W 150 7W 180 9W 210 13W 240 8W 270 4W 300 2W 330 0 |
| Problem 2 Year of sailing 2006 no leeway. At 0500 you leave Whale Rock Light on a CC of 142d. At 0532 your radar range to the R "2" Fl. R 4sec. whistle buoy at Brenton Reef is exactly 0.75 miles distant. At the same time you take a Compass Bearing on the Brenton Reef Beacon Gp Fl.(2) 10sec. 87ft. 25M Horn as CB 311. 2a. What is the deviation? 2b. What was your True Course? 2c. What is your position? 2d. What is the distance back to Whale Rock Light? 2e. What was your boat speed on this trip from Whale Rock Light to your current postion at 0532? You plan to sail to the BW "SR" Mo (A) whistle located at the Sakonnet River mid channel. 2f. What is the TC (True Course) to the "SR" buoy? 2g. What is the CC? 2h. What is the deviation? 2i. What is the distance? Your boat speed on this new course is 5.2 knots. 2j. What is your ETA to the "SR" buoy? |