Not really, any ship could serve as the flagship. An Admiral could command a fleet from a garbage scow if they really wanted to.<br/><br/>http://en.wikipedia.org/wiki/Flagship (http://en.wikipedia.org/wiki/Flagship)<br/><br/><div class="quoteheader"><div class="topslice_quote">Quote</div></div><blockquote class="bbc_standard_quote">In the 20th century, ships became large enough that most types could accommodate a commander and staff, and <strong>during World War II admirals would often prefer a faster ship over the largest one</strong>. Some larger ships may have a separate flag bridge for use by the admiral and his staff while the captain commanded from the main navigation bridge. Because its primary function is to coordinate a fleet, <strong>a flagship is not necessarily more heavily armed or fortified than other ships.</strong></blockquote><div class="quotefooter"><div class="botslice_quote"></div></div>