Azzam vs. Koru

German builder Lurssen proudly delivered the world's longest yacht, Azzam, in November 2013. Ten years later, Koru set sail as the world's 24th longest yacht. The difference between the LOA is nearly enough to park 13 Lamborghini Gallardos nose-to-boot. Note, though, that Koru is almost 15% bowsprit, so she has a boost.

Azzam allows for up to 36 guests to sleep aboard with a crew of 80, while Koru can have 18 guests with 40 crew members. So Azzam can sleep nearly 20 more guests than Koru, and she has twice as many crew for daily operations and service. In addition, Azzam also has provision for around 60 of the guests' employees. Azzam's guests can arrive in style using the helipad located forward of the upper deck. It is a touch-and-go helipad, only certified for dropping off.

Despite its name gross tonnage (GT) is not about weight. It actually measures the overall internal volume of a yacht, including all enclosed spaces like cabins and storage areas. In terms of yacht size, Azzam and Koru are really quite different, both in overall length and GT. Azzam, in fact, has just shy of four times as much usable space as Koru. The difference is the equivalent of almost 480 shipping containers. This is why YachtBuyer presents the YB100, setting a new benchmark for ranking the world's largest yachts. Positioned fifth in the YB100 rankings by GT, Azzam has a four-spot descent from her position in the Top 100 based on length. Elsewhere, within the YB100, Koru commands the 77th position and descends by 49 places from her spot in the Top 100.