After exiting the pentagram apartment, I used the walky talky and then tried to use the co-ordinate computer, but it kept telling me to use the walky talky first, but I had already used it and talked to the captain and couldn't interact with it any more, meaning I couldn't move the boat so I couldn't progress any further. I can go back in the apartment or exit the game to rest the walky talky, but I still get the message from the co-ordinate computer saying I should use the walky-talky first.