According to TMZ, Captain Phil Harris' son Jake Harris, was accused by the current captain of the Cornelia Marie, that Jake had been abusing prescription drugs while on board the ship. The captain, Derek Ray, called the police who came and searched the boat and interviewed all the crew. Although they found some paraphernalia they did not make any arrests. Deadliest Catch has just not been the same since Captain Phil has died. I don't know if it is just the balance or all the other dram surrounding the other boats, but the show has not felt the same since he died.
Of course it could just be that after all these years of watching pretty much the same thing episode after episode that I am getting bored with it. I can tell you that if Jake was doing drugs while Phil was alive, Phil would not have tolerated it at all and the police would have never been brought in. Phil would have just handled it himself. You didn't cross Phil.