Sorry, it just isn't all that simple. Motor vessels can under a number of situations, have priority over sailing vessels. And for most pleasure craft operators who also sail lakes, bays, rivers, estuaries, any of the nation's ICWs and/or harbors within US waters, there are TWO sets of ColRegs that they should know, and understand. The International ColRegs concern vessels outside of a line beyond most features that include any of the above, and the US Inland ColRegs for those inside.The key is rules apply to motorboats with exceptions for sail driven vessels and towed etc.
Darn, more book learning...lol.