High-valued installation floaters are written on extremely large projects that require the installation of large and/or elaborate and/or complex pieces of machinery and equipment. This work takes place at the customer's location and can last many months or even years. The owner usually does not accept the project until all required testing is completed successfully. The large sums of money invested in this machinery and equipment, the relative scarcity of such equipment and component parts, and the length of time required to complete the installation combine to make high-value installation floater insurance a specialty line few underwriters provide. This coverage is usually written on inland marine coverage forms.