The shirts you describe, which I would not particularly call dress shirts, are a smart-looking innovation that does not seem to have a name -- it is often described as "contrast fabric inside neckband ...
The longer length makes it easy to cover areas you don't want exposed, like your tummy and bottom. And don't be worried that ...
If it takes two to tango, it takes a whole boatload of people to sail. Do you have your cruising etiquette down pat?