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> In fact, no existing U.S. shipyard has built a heavy > polar icebreaker since before 1970. What does since before mean?
by iwontberude 2y ago
> In fact, no existing U.S. shipyard has built a heavy
> polar icebreaker since before 1970.
What does since before mean?
- lbcadden3 2y agoThe last polar icebreaker built in a US shipyard occurred in 1969 or earlier.
- deleted 2y ago[deleted]