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.
Meatloaf is best cooked at 350 or 375 versus 400. Cook time varies  depending on the shape of the meatloaf. It can be hand shaped into  a round loaf or in a loaf pan. Intern â¦ al temperature should be 170  degrees.To cook faster, you can shape it into two loafs and bake.ever cook for just 22 minutes, even if it's just a 1lb. Cook it on 350 for 40 minutes per lb. 1 lb. of ground beef = 375 degrees for one hour.