text: The consolidated financial statements are prepared on a historical basis, except for derivative financial instruments 
  which are measured at fair value. The consolidated financial statements are presented in US dollars and all values 
  are rounded to the nearest thousand (US$’000), except where stated otherwise. 
  
  **Principles of Consolidation**
  A controlled entity is any entity over which SEAL is exposed, or has rights to variable returns from its involvement 
  with the entity and has the ability to affect those returns through its power over the entity. The consolidated 
  financial statements incorporate the assets and liabilities of all entities controlled by SEAL as at 31 December 2014 
  and the results of all controlled entities for the year then ended. 
  
  All inter-group balances and transactions between entities in the Group, including any recognised profits or losses, 
  are eliminated on consolidation. 
  
  **a)**
  The income tax expense for the period comprises current income tax expense/(income) and deferred income tax 
  expense/(income). 
  
  **Income Tax**
  
  Current income tax expense charged to the statement of profit or loss is the tax payable on taxable income calculated 
  using applicable income tax rates enacted, or substantially enacted, as at the reporting date. Current tax 
  liabilities/(assets) are therefore measured at the amounts expected to be paid to/(recovered from) the relevant 
  taxation authority. 