Gould also discusses the possibility that what Morrell sighted was indeed the eastern coast of Graham Land, the so-called "Foyn Coast", despite its being 14° further west from position of the New South Greenland sighting. In support, Gould asserts that the peninsula's eastern coast corresponds very closely with the stretch of coastline described by Morrell. This theory supposes that Morrell miscalculated the ship's position, perhaps because he lacked the chronometer necessary for proper navigational observation. In his account Morrell writes that he was "destitute of the various nautical and mathematical instruments", but other parts of his narrative make it clear that the occasional dead reckoning calculation was the exception to the norm. In any circumstances a longitudinal error of 14° is very large, and the additional distance of about to the Foyn coast seems too great to have been covered within the ten-day voyage from the South Sandwich Islands, where the ship's position is recorded accurately. Even so, Gould maintains that a "balance of evidence" shows that what Morrell saw was the Foyn coast.