So so far the advantages/disadvantages of the sail-less-ness are:
Sail-less
Good
-Less prone to wave action per say (mostly caused by the sail)
-Less drag = quieter and higher top speed
-Less draft = more manueverable in littoral waters
Bad
-Extremely long mast = slower and noiser 'mast up'
-If short mast used then shallower PD
-port transits complicated by no bridge (PD dependent)
Sail
Good
-Deeper PD
-shorter/stronger mastup's
-visible in surface transits
Bad
-worst in higher sea state (wave action on the sail)
-more drag = more self noise and slow speeds
-shallow water limitations
Modified sails (in picture)
Good
-more internal volume
Bad
-more drag
-Ugly as sin (induces intractable vomiting)
