Abstract: A primary exhaust bypass for a water-borne vessel having a seat member and a closure member coupled to the seat member, wherein the seat and closure members are configured to seal against exhaust leakage in the closed position and to allow exhaust leakage in the opened condition, and a locking mechanism, wherein the bypass is configured to open when the vessel lists a predetermined amount. A method of bypassing a blocked primary exhaust system may include establishing a bypass exhaust route, providing a normally-closed bypass mechanism at a distal portion of the bypass exhaust route, and changing the orientation of the bypass mechanism with respect to gravity, which may allow the bypass mechanism to open.

Abstract: A filter assembly comprising a housing having an air inlet and an air outlet and a filter chamber disposed between the inlet and the outlet, the housing having an air flow path there through. A filter element having a first surface area maybe located within the filter chamber and oriented such that the first surface area is angled with respect to the air flow path. The filter element may comprise a filter media adapted to remove contaminants from the air. A drain may be associated with the housing and adapted to remove contaminants filtered out of the air.

Abstract: An assembly for establishing a water-tight seal for a conduit passing through a wall or other structure wherein the conduit conveys heated fluid, such as exhaust gasses. The assembly is adapted to minimize the heat transferred to the wall or other structure by creating a circuitous heat transfer path in conjunction with thermally insulating materials.

Abstract: An inlet and/or outlet air hood comprising vertical storm louvers is provided that is particularly well suited for use on a Mobile Offshore Drilling Unit and other marine vessels, although its use is not so limited. The hood may comprise a basic cube shape, which affords a smaller projected footprint than conventional round- or mushroom-shaped hoods and may incorporate an internal flow shaper, such as an inlet/outlet bell, to reduce airflow resistance. In addition, the hood may be configured to incorporate an internal valve or baffle to create a watertight closure.

Abstract: A primary exhaust bypass for a water-borne vessel having a seat member and a closure member coupled to the seat member, wherein the seat and closure members are configured to seal against exhaust leakage in the closed position and to allow exhaust leakage in the opened condition, and a locking mechanism, wherein the bypass is configured to open when the vessel lists a predetermined amount. A method of bypassing a blocked primary exhaust system may include establishing a bypass exhaust route, providing a normally-closed bypass mechanism at a distal portion of the bypass exhaust route, and changing the orientation of the bypass mechanism with respect to gravity, which may allow the bypass mechanism to open.