A couple from Trojan, because I use a sensible uploader rather than one that goes dead for weeks
First is the high speed transport idea discussed above for use in high risk areas and for high value bulk cargoes. Based on the Guam.
She appears to be lightly armed with point defence weaponry, and carries drones for extra amusement.
Second is a future flagship concept based, I believe, on the LCS. For some reason I'm having trouble linking at full size right now, but I think this will do for basic concepts.
As much as I enjoy Trojans work on this, I'm not 100% whether the company will actually end up using it. But it will certainly go in the main post as concept work for a new flagship. Depends whether they continue the auxiliary flag idea from the 70's.