The deep space version of Mark II differed from the rendezvous type only in having backup navigation gear and extra heat and radiation protection, 270 kilograms more on a 2,900-kilogram spacecraft.

• 深层太空版的马可II与会合型飞船的不同之处仅在于它配备了备用导航装置以及超热和辐射保护设施，飞船重量也因此在2900千克上增加了270千克。