Sentences of a paragraph are given below in jumbled order. Arrange the sentences in the correct order to form a meaningful and coherent paragraph.

A : In proportion as he approached the regions where he expected to find land, the impatience of his crews augmented.
B : They beheld themselves with dismay still wafted onward over the boundless wastes of what appeared to them a mere watery desert surrounding the habitable world.
C : But if they were still to press forward, adding at every moment to the immense expanse behind them, they would be the authors of their own destruction.
D : The situation of Columbus was daily becoming more and more critical.
E : Their ships were too weak and defective even for the great voyage they had already made.
F : The favourable signs which increased his confidence were decided by them as delusive.