To prevent CH4 Hydrate

In oder to prevent methane hydrate crystallizing, the vessel must be filled with warm water (about 150° F). Furthermore, the drain must be placed as deep down as possible in the compartment.  Once the vessel has touched  the sea bed (on top of the well), the compartment is filled with oil and will press the warm water through the drainpipe via the hose to the surface. It is adviced to use an isolated hose (no steel pipe) leading to the surface.