International tribunals — Jurisdiction — Admissibility — United Nations Convention on the Law of the Sea, 1982 (“UNCLOS”) — Annex VII tribunal — Scope of jurisdiction — Whether restricted to alleged violation of UNCLOS — Other international court seised of case — Whether tribunal should defer to other court — Suspension of proceedings — Whether precluding exercise of provisional measures jurisdiction

International tribunals — Provisional measures of protection — Criteria — Urgency — Need for measures to preserve rights of either party — Equality between parties — Prevention of serious harm to the marine environment

Sea — Marine environment — UNCLOS — Protection of marine environment — Use of provisional measures jurisdiction