A system for roaming TCP connections when the physical networks are changed, comprising a Virtual Network Interface Card having a unique IP address. The exhaust gas heat recovery device includes an exhaust pipe that leads the exhaust gas from an upstream side to a downstream side, a cylindrical shell that covers an outside of the exhaust pipe, and an exhaust gas heat recovery section that is interposed between the exhaust pipe and the cylindrical shell and that performs heat exchange between the exhaust gas and a heat exchange medium. In one embodiment, the cavity includes an element protruding out a side of the storage cavity to retain a card within the storage cavity. A sensor can sense the position of the vessel relative the mooring facility. The novel compounds may be used as surface modifying agents, surfactants, defoamers, and as monomers for silicone polymerization.