2017 | 2016 | |||||||
Portion of tax loss carryforwards for subsequent years | $ | (279,334 | ) | $ | 1,543,387 | |||
Inventories and provisions – net | 65,091 | 40,964 | ||||||
Concession rights and property, vessels and equipment | (619,651 | ) | (1,662,402 | ) | ||||
Total deferred tax liability | $ | (275,226 | ) | $ | (78,051 | ) |