simply by placing it over that object on the chart and reading the figures from the display. If a suitable radar is fitted it can be combined with the Yeoman plotter for navigation in poor visibility. In one mode, the position of the mouse on the chart is reflected in a cursor on the radar display - the mouse can be placed over a charted object to identify its echo on the radar, which is very useful for objects whose reflection may not be obvious. Similarly, a position from the radar screen can be sent to the Yeoman - the mouse is moved by hand following the illuminated arrows as for plotting a fix, and is guided to the location of the radar return. Advantages The way in which the Yeoman plotter combines speedy GPS position fixing with a paper chart is cited as a benefit for two principal reasons. The first is one of safety and reliability - even the best marine electronics fail from time to time, and if the boat's electronic instruments should cease to work then a recent pencil plot on a paper chart becomes extremely valuable. Because such a fix can be made on a Yeoman in around two seconds, it is likely to be updated far more frequently. The fact that the correct chart is guaranteed to be on board, up to date, and open on the chart table ready for reversion to traditional navigation is also an aspect to consider as video chart plotters become more widely used. The second benefit of the Yeoman plotter over an electronic chart display is cited less often, but to most of its users is the more important - they find it easier to use. While video plotter technology is improving every year, they still must display their charts on relatively small screens, with input via a single small joystick and a few buttons. By contrast, a printed chart on a Yeoman Navigator provides a 35-inch "display" at extremely high resolution, that one can draw on, make notes upon, and use for traditional operations with dividers and rulers, combined with instant (permanent!) position fixes and range-and-bearing information from the Yeoman mouse. This mixing of technology and traditional techniques was quite effective. Versions Yeoman made four versions of their plotter for different situations: Maxi Designed to be installed on the bridge of large ships, this is a self-contained