[Image: Ship's Track]

The course of Titanic is shown on this portion of a universal plotting sheet. When on the open ocean, navigators use these sheets to create Mercator charts of the area in which they are sailing. The scale of an ocean chart is too small to be used for working out a position and plotting it. Once the ship's position is known, it is transferred to the chart to give a general idea of progress.

Titanic's precise movements on reaching the turning point are not known. This chart is based on evidence that her course of 242° True was held for about 30 minutes after the turn was passed. It should be understood that her latitude at this time was not precisely known, as it was based on an observation made nearly six hours earlier.

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