Transport Boat (运兵艇突袭; pinyin: yùn bīng tǐng túxí) is the tenth zombie encountered in Sky City. It flies next to the home ship and releases Flying Imp Zombies parachuting down on any tile of the home ship. Once they reach the end of the home ship, they will parachute down.
The Transport Boat is invincible and cannot attack the player directly, but it will throw Flying Imp Zombies onto random ground columns. These Imps will attack plants from behind and after they eat all your plants, they will jump off the screen using a parachute. For more, see strategies against Flying Imp Zombies.
It also obscures the upper part of the screen as well due to its massive size, thus enabling other zombies to slip past.