The “charterer’s liability insurance” is a type of marine insurance. According to English Marine Insurance Act 1906, s. 1, “A contract of marine insurance is a contract whereby the insurer undertakes to indemnify the assured, in manner and to the extent thereby agreed, against marine losses, that is to say, the losses incident to marine adventure”.
Most ships are chartered either on a time charter or voyage charter contract. In both cases the charterer assumes liabilities towards the shipowner because of damage caused to the ship in the course of cargo-handling or because of damage resulting from an unsafe port or berth. And also, the charterer becomes liable similarly to the shipowner, with P&I liability to cargo, pollution claims and etc. All charterers require cover for both damage to hull and other P&I liabilities. The so-called “charterer’s liability insurance” provides coverage for such risks.