A spar-type offshore platform includes a buoyant upper hull structure supporting a deck and having lower end in which is received a buoyant lower mooring module. A motor is supported by the motor support unit, and an output shaft rotatably driven by the motor protrudes from the motor on either side thereof. The method of making the disk base, the disk cover, the cover insert for the disk cover, the disk damper, andor the hard disk drive, as well as the products of these manufacturing processes. The apparatus further includes a heater device having a surface facing said spacing, for heating either fluid layer. The combination of filters is useful to prevent unauthorized data collection and information exchange from or within buildings or otherwise prevent such unauthorized data collection and information exchange from, for example, computer monitors or screens, personal digital assistants, and local area networks. The requested money is sent to the second user upon a receipt of a request at the server computer from the second user.