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There are many types of commercial
vessels. bulk carriers are ships that transport cargo types like
coal,ores of all kinds, grain,and other types of bulk cargo.
Pproduct tankers carries end or close to end products(mostly petroleum
based),such as gasoline and diesel fuel. Drilling rigs can be small and
portable such as those used in mineral exploration drilling, or huge,
capable of drilling through thousands of metres of the Earth's crust;
large "mud pumps" are used to circulate drilling mud (slurry) through
the drill bit and the casing, for cooling and removing the "cuttings"
whilst a well is drilled; hoists in the rig can lift thousands of tons
of pipe; other equipment can force acid or sand into reservoirs to
facilitate extraction of the oil or mineral sample; and permanent
living accommodation and catering for crews which may be greater than a
hundred people in number. Marine rigs may operate many hundreds of
miles or kilometres offshore with infrequent crew rotation. Construction
engineering or civil engineering is a professional career that
involves the designing, planning, building, and management of
infrastructure such as highway, bridge, airport, railway, building,
dam, and utility. Construction Engineers are special in such that they
are a hybrid between civil engineers and construction managers. They
learn the design aspect much like civil engineers and construction site
management functions like construction managers.