U.K. based software house Marine Software Ltd has successfully supplied Marine Planned Maintenance to the U.K. Agency, for a number of their Challenger Class Yachts. In order to meet the Ministry of Defense s specific operational requirements, these Challenger Class Yacht systems will be office based software using Office Planned Maintenance for Windows. Configuring the systems this way will eliminate the need of installing on-board computer systems for those smaller vessels where it is not economically viable to install hardware. issued directly to each vessel, then completion reports would be sent back to the office for updating of the system.