With production motors ready to ship, Seven Marine must now convince boaters that having a set of the most powerful outboards is the worth the cost. The purchase price of the triple 557 package with joystick steering is $270,000, bringing the tariff of the Midnight Express 39 Open to $700,000. That’s steep, but it’s also the only way of getting 1,671 hp with three outboards. Quads are the maximum on the 39 Open, but to get that kind of power, you’d need five 350s, a power package than can weigh as much as 22 percent more; five outboards also require a lot more rigging and a quintet of lower units generate substantially more drag than do three. On the other hand, the MSRP of five 350s (without joystick steering) ranges from 42 to 45 percent less than the triple 557s.