These were the snubbing posts, and were thus placed so that the ark might be tied up from any corner. Seeing Duncan look closely at the posts, Warwick explained, "That's apple wood—the only wood we can find that won't grow rough from the chafing of a rope."
To ensure the ark was safely moored from any side, the blocking posts were carefully positioned. As Duncan scrutinized the posts closely, Warwick pointed out, "We're using apple wood for this purpose—the only suitable material that won't deteriorate due to rope friction."