FOLLOWING ON THE HEELS of its first GT yacht—the GT50, launched a little more than a year and a half ago—Palm Beach Motor Yachts has launched the GT60, which increases the series’ length overall, performance and comfort quotient on board.¶ Like its sistership, the GT60 has Down East-inspired lines, tumblehome and a warped, semidisplacement hull form. The yacht’s straight sheerline, raked trunk cabin, single-piece curved windshield and radiused hardtop create a sense of motion, even when the yacht is stationary. ¶ HullNo. 1, seen here, has a traditional blue hull accented by a cream-tone hardtop, superstructure, teak joinery, decks and the like. But Hull No. 2, going to an Australian owner, will be sans rails and will have a metallic-black paint job and a thoroughly modern interior. ¶ One thing…