Most drill ships and barges have a walled opening below the derrick, open to the water's surface and through which various drilling tools can pass down to the sea floor called a ___________________.
A
moon pool
B
spider deck opening
C
pontoon
D
keyway
E
İlgili Sorular
Leg penetration to depths which require pullout forces greater than that which can be supplied by t...Vessels regularly navigating rivers above Cairo, Illinois, shall at all times have on board a copy ...Perihelion is the point where the Sun __________.INTERNATIONAL AND INLAND A sailing vessel must keep course and speed when ______________.The dividing meridian between zone descriptions +7 and +8 is __________.