Seaslug's danger in an anti-ship role

How effective could Seaslug be against ships, and how dangerous would a County-class destroyer firing it be?

A direct hit from the large missile would be dangerous, although it was not designed primarily for anti-ship work.

Seaslug was not designed primarily for anti-ship work. Its large size nevertheless makes a direct hit a serious prospect, comparable to the physical blow of large Soviet missiles. The danger depends on achieving a hit. No estimate of its reliability against a defended ship accompanies this judgment.