Where a 170-gun first rate could actually see action

Could a British 170-gun four-deck first rate be finished in time to see wartime service?

It could serve if built at the right time, but it would probably act as an intimidating tool against a weaker navy rather than fight an equal opponent.

The hypothetical four-decker could enter service if its construction date allowed, but finding a useful combat role would be harder. The answer doubts that Britain would face anything it needed a 170-gun ship to fight. One suggested employment is to accompany the attack on Washington during the War of 1812 as an intimidating display. That scenario plays on the disparity between American frigates and a very large British ship of the line. It remains a speculative use for the proposed vessel.