Maybe too strong a word to use, "seaworthy"? The double ended hull was used for rescue boats in the North Sea so it seems a good choice for nastier conditions regardless of the size of the boat.
Bottom line for me is that I would like a boat that I can take to the coast here in Oregon and feel comfortable taking out in a descent swell. I suppose by saying seaworthy, I am differentiating the boat from other motorboats which are better suited to protected waterways.
From the Allweather website:
Excerpt from Ted Brewer, N.A. (Naval Architect) speaking about the ALLWEATHER 8 Meter named "BOB":
"In any case, ALLWEATHER 8 Meter is about the safest little motor boat that I can imagine and will bob upright again in conditions where the average motor boat will capsize. Very few of them have a capsize angle of much over 90 degrees compared to BOB's 120 plus. The righting moment at 50-70 degrees might be higher due to wide beam, hard chines and a wide transom, but it will fall off rapidly after it reaches its maximum.