is insurance of the same interest by several insurers against the same risks when total insurance amount exceeds insurance value. In case of double insurance, insurers are liable within the limits of insurance value of insurable interest, and each of them responds in proportion to insurance amount under an insurance agreement concluded by it. In developed countries, double insurance may be used for enrichment, and therefore the legislation of these countries pays great attention to this issue. Triple and further insurance is called as multiple insurance and falls under the same rules as double insurance.