Grand Theft Auto 5 Submarine pieces hidden places

Character Availability: Michael only Submarine Piece collection is activated by speaking with the random character, Abigail, who stands on the left side of the Sonar Collections Dock (A). She asks if you were a fan of Frank Mathers, and indeed you are. He's a TV personality that switched his passion from space to undersea exploration. Well, Abigail was his second wife. Frank is dead now and she is penniless. It is rumored that she may have had to do something with his passing. Abigail explains that his submarine broke apart while trying to save the San Andreas White Shark. His body was never found. When asked about the story of the tampered airlock, Abigail quickly squelches, "That was never proven." She wants your help to prove that Frank is dead and the airlock was responsible, so she can collect the life insurance. She makes a promise to make it worth your while. Abigail becomes a new contact. A Dinghy is docked in front of the Submersible at the right end of the pier and is used to search for the 30 missing Submarine Pieces. Searching for Submarine Pieces is a lot like searching for Nuclear Waste in the submarine. The Dinghy has an onboard sonar that works similar to the TRACKIFY app. It's used to hone in on the location of a collectible, and it only tracks one piece at a time. If the sub is ever grounded in shallow waters, simply tilt down on the Left Control Stick and give it some gas to raise the nose out of the silt and get some water underneath it. This is also a good way to quickly skim across the water surface. Different water conditions are also encountered on your travels. When traveling in dark water (when the sun is down), the submarine's lights help guide the way.