▁smaller , ▁less ▁powerful ▁and ▁has ▁open - prop eller ▁Az ip od ▁units ▁instead ▁of ▁Aqu am aster s ▁with ▁du cted ▁prop ellers ▁as ▁the ▁latter ▁had ▁proved ▁to ▁be ▁problem atic ▁in ▁ice . ▁ ▁The ▁new ▁multip ur pose ▁ice bre aker ▁was ▁given ▁the ▁name ▁Bot nica ▁and ▁delivered ▁to ▁the ▁Finn ish ▁National ▁Board ▁of ▁Navigation ▁in ▁June ▁ 1 9 9 8 , ▁slightly ▁late ▁of ▁the ▁original ▁schedule . ▁Until ▁the ▁recent ▁delivery ▁of ▁the ▁new ▁ice bre aker / t ug ▁A ht o , ▁Bot nica ▁was ▁the ▁new est ▁ice bre aker ▁to ▁be ▁commission ed ▁in ▁Finland . ▁ ▁Career ▁▁ ▁Like ▁the ▁older ▁Finn ish ▁multip ur pose ▁ice break ers , ▁Bot nica ▁was ▁char tered ▁to ▁D S ND ▁Off sh ore ▁AS ▁for ▁ 1 8 0 ▁days ▁per ▁year , ▁while ▁in ▁the ▁winter ▁months ▁she ▁was ▁employed ▁as ▁a ▁traditional ▁esc ort ▁ice bre aker ▁in ▁the ▁Balt ic ▁Sea . ▁Once ▁ice bre aker ▁assistance ▁was ▁no ▁longer ▁needed , ▁the ▁off sh ore ▁construction ▁equipment ▁was ▁re - installed ▁and ▁the ▁vessel ▁left ▁the ▁Balt ic ▁Sea ▁for ▁the ▁summer ▁season . ▁In ▁ 2 0 0 2 ▁Hal lib ur ton ▁Off sh ore ▁and ▁D S ND ▁combined ▁their ▁resources ▁and ▁the ▁char ter ▁of ▁the ▁multip ur pose ▁ice break ers ▁was ▁transferred ▁to ▁the ▁new ▁company , ▁Sub se a ▁ 7 . ▁Until ▁ 2 0 0 4