Classic Vessel Set (Qiji 3717)

About this set

This KEEPPLEY 3717 Classic Vessel Set sits in the Octonauts line, with the box marked under the Qimeng label. It is positioned as easy-build brick play and rates 2/5 for difficulty, so the clutch is friendly to newcomers. The palette leans on blue-green with orange and grey accents, giving the whole thing a seabed look. The finished build includes a submarine, the Octopus Fortress, a treasure chest and a seabed scene, plus minifigures, so you get a small scene with a clear centerpiece rather than a single vehicle. Sort the blue-green, orange and grey parts first, then build the submarine and fortress bodies before placing the chest and figures; that order makes finding pieces and following the instructions smoother. Because the structure is simple-build, the steps are not overly fragmented, which suits first-time builders or parent-child sessions. If you mainly want dense vessel detailing, note that this set puts its weight on the scene and character mix instead.