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.
Depends on how big it is. As a rule you should cook a 5lb meatloaf in a loaf pan for about 1 and a half hours at 325F. Cover with foil unless you put ketchup or catsup on top â¦ of it-you can brown it wen it's cooked. Best thing to do is to get a thermometer, once the meatloaf hits 160-165F internally then it should be moist and juicy and cooked.   See my blog for the best turkey meatloaf recipe ever and for amazing and original turkey recipes.