[Blueflag]

Bad sentence/antecedent structure: why was the attack boat so shallow.

Perhaps the array of the British ship *WAS* deep enough to obstruct the deeper sub.

My reading error.

[Yo-Yo]

Perhaps the array of the British ship *WAS* deep enough to obstruct the deeper sub.

Part of the purpose of a towed array is to get hydrophones below a thermal layer. (Another part is to get hydrophones away from the ship's own noise.)