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
pontoon
B
moon pool
C
keyway
D
spider deck opening
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Question 1 / 2066636ee728f7522a1c517a17
Question 1 of 2066636ee728f7522a1c517a17
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 __________.
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 __________.