Given a starting point from dead reckoning (calculations based on speed, time, and direction) or a sextant reading, you would track the boat's direction (with a compass) and speed (with a log) to continue to know the boat's position. Now, however, most mariners use a marine GPS chartplotter to navigate.ome handheld GPS units also are plotters, if they show the position of the boat on a chart. A GPS unit that provides the position only in longitude and latitude is not considered a plotter. For all types of plotters, the general principles are the same: 1  The screen shows a nautical chart.
Tips & Warnings. Small 1-pound meatloaves can be cooked at a lower temperature of 300 F to 325 F, if you prefer, for 10 to 12 minutes longer. This gentler cooking minimizes moisture loss as the meatloaf cooks, yielding a moister and juicier end result.
You should bake meatloaf at 350 degrees F for 30-40- minutes per pound if cooked in a bread pan. If cooked in a shallow pan, it won't take as long for the center to get done.The temperature of a meatloaf when done should be 160 degrees F when checked with a probe. typical two pound meatloaf should be covered in foil. Preheat  oven at 375 degrees and back for 80 minutes. Next remove the foil  and cook at 375 for another 15 minutes.