Ballast water discharge assessmentCommercial vessels are built for the transport of various cargoes or passengers. When a vessel is not fully laden, additional weight is required to provide for the vessel's seaworthiness, e.g. to compensate for the increased buoyancy which can result in the lack...
In this chapter we focus on ballast water management systems (BWMS) which are currently in use as well as treatment approaches manufacturers have chosen for the development of future BWMS. The main purpose of this review is to identify the current availability of BWMS technologies worldwide. Until...
In order to improve training of crews for semi-submersible vessel maneuvering,ballast water system simulation is developed with VB in a navigation simulator of semi-submersible heavy lift vessel.Mathematical models of the pressure,electric current and liquid level of ballast tanks,compressors and pumps...
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Additionally a subsea rock installation vessel can be used to ballast the legs of offshore platforms, and this work can involve, for example, pumping a mixture of water and rock into the legs. Our vessels have a capacity to hold 24,000 tons of rock which are taken on conveyor belts and...
The vessels in the Bourbon Evolution 800 series are equipped with stainless steel tanks below deck with a storage capacity of 1,096m³ of fuel oil, 2,508m³ of ballast water, 946m³ of fresh water, 750m³ of antiheeling, 374m³ of methanol, 300m³ of oil recovery, 152m...
Additionally, a smaller craft called a dinghee, is used to communicate between the two or to send messages to the shore. When the wind is too light to use the sails but the water levels are low enough to stand, the the boats can be towed along by sixteen or more men dragging at ...
“Ballast water management is an important feature of the overall emphasis on environmentally sustainable shipping. Wärtsilä has always paid great attention to working in close cooperation with the customer to ensure that the selected system is appropriate for the ship and its op...
One embodiment of the process for de-halogenating ballast water comprises measuring the oxidation/reduction potential of the ballast water and adding one or more reducing agents to the ballast water to de-halogenate the ballast water in response to the measured oxidation/reduction potential. In one...
water while they are being towed into place. In order to minimize the effects of oceans swells and waves on the platforms, the pontoons are submerged during use of the platforms for their intended purposes. This subjects only the main vertical support columns to the surface action of the sea...