Analysts have backed Global Ship Lease (GSL)'s $244m deal to buy Borealis' boxship fleet as adding "valuable" dividend capacity.

But Norwegian investment bank Fearnley Securities, which has a buy rating on GSL, said it is getting increasingly difficult to find attractive containership deals in "boiling hot" markets.

GSL agreed to acquire 12 ships of around 3,000 teu from Oslo-listed Borealis Finance on 8 June.