Two years ago we reviewed 4YOU, a 154-foot motoryacht built by Heesen Yachts. Today, we report on our visit aboard Lady Petra, another 154-foot motoryacht from Heesen. Except for the overall length and the quality of the build, these two yachts are strikingly different. The earlier yacht was all-aluminum and employed a semidisplacement hull form and powerful engines to achieve a top speed of 24 knots. Lady Petra, by contrast, has a steel displacement hull, and with engines producing less than half the power of 4YOU’s, tops out at 15.5 knots, which is more suitable for the owners’ extended cruising agenda.