Hi Russ,ll the models/images I've seen of Enterprize 1774 only have gunport covers on on the last three aft gunports,
My first reaction to this was surprise. Regarding 6th Rates in general, not just the sectional model, and not just Enterprize and her class, port lids were not used in the area of the waist as they serve no purpose, but what about under the forecastle where spray would be a constant issue. The foremost ports on the upper most deck sometimes did have half lids, and this is mentioned by David Antscherl in the TFFM series, volume 2. Then I looked at plans which of course rarely, if ever, show port lids so no help. The two well known paintings of Enterprise forward and aft views confirm only three aft ports with lids as you point out. Contemporary models of 6th rates seem to confirm this was commonplace as well. This is not addressed by Goodwin or Steel that I could find, so hard to make any other conclusion than what you posted. Thanks for this information, much appreciated!
Allan