▁that ▁year . ▁Later , ▁Th ala ▁Dan ▁was ▁allocated ▁I MO ▁Number ▁ 5 3 5 7 6 8 0 ▁as ▁her ▁permanent ▁identity . ▁ ▁As ▁built , ▁Th ala ▁Dan ▁was ▁ ▁LO A ▁and ▁( ▁L B P , ▁with ▁a ▁beam ▁of ▁ ▁and ▁dra ug ht ▁of ▁. ▁She ▁was ▁prop elled ▁by ▁a ▁Bur meister ▁& ▁W ain ▁dies el ▁engine , ▁made ▁in ▁C open hagen , ▁driving ▁a ▁single ▁sc rew ▁which ▁could ▁prop el ▁the ▁ship ▁at ▁. ▁Up ▁to ▁ 5 0 ▁passengers ▁could ▁be ▁carried , ▁in ▁ 2 - ▁to ▁ 5 - ber th ▁cab ins . ▁ ▁Laur itzen ▁service ▁ ▁As ▁with ▁her ▁prede cess or ▁K ista ▁Dan , ▁Th ala ▁Dan ▁trad ed ▁from ▁Den mark ▁to ▁Green land ▁and ▁Canada ▁during ▁the ▁northern ▁summer , ▁and ▁was ▁char tered ▁to ▁the ▁Australian ▁Ant ar ctic ▁Division ▁of ▁the ▁Department ▁of ▁the ▁Environment ▁and ▁Energy ▁in ▁the ▁southern ▁summer ▁of ▁each ▁year ▁from ▁the ▁ 1 9 5 7 ▁to ▁ 1 9 8 2 . ▁Initial ly ▁operating ▁out ▁of ▁Melbourne , ▁and ▁later ▁Hob art , ▁Tas mania , ▁the ▁ship ▁was ▁used ▁to ▁re - supp ly ▁the ▁Australian ▁bases ▁at ▁Mac qu arie ▁Island , ▁M aw son ▁Station , ▁Davis ▁Station , ▁Wil kes ▁Station ▁and ▁Case y ▁Station , ▁for ▁occas ional ▁vis its ▁to ▁He ard ▁Island , ▁the ▁Russian ▁Mir ny ▁Station , ▁the ▁French ▁Dum ont