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.
The cooking time for meatloaf is usually 30 minutes per pound at  350 degrees. Therefore cooking a 4 pound meatloaf should take  around 2 hours.aking the world better, one answer at a time. An hour at 375 should be sufficient, but you can go up to an hour and twenty minutes if you prefer it on the more done side. It is good to add lots of lightly cooked fresh veggies(onions, carrots, zucchini, peppers, corn, spinach) to keep your meatloaf moist.