Captain Phil Harris from "Deadliest Catch" woke up from a medically induced coma Tuesday, according to his sons -- and immediately started barking commands from his Anchorage hospital bed.
Jake and Josh Harris tell TMZ their dad "showed some good signs of improvement" today, including squeezing their hands.
Harris' sons -- who both work with him aboard the F/V Cornelia Marie -- say they are "encouraged but still very cautious" as Captain Phil recovers from the stroke he suffered on Friday.
One really good sign -- his sons tell us that shortly after waking up, Harris told his doctors and nurses: "Don't f**k up."
Aye, aye Captain.