5. U.S.S. Yorktown NCC-20045 -
Because the only other 24th century Yorktown is the Zodiac class NCC-61137
2. U.S.S. Constantinople NCC-43622 - This ship was referenced three episodes before "Measure of a Man." The Encyclopedia gives the registry of NCC-34852.
3. U.S.S. Wellington NCC-33821 - This is obviously supposed to be the same ship referenced in "11001001," but the Encyclopedia gives the registry NCC-28473.
None of these Encyclopedia registries have been identified onscreen so far.