PHASE II TITANSUBMARINE CONCEPT DEVELOPMENT BETTER DEFINE TITAN SUB SCIENCE APPROACH AND INSTRUMENTATION FURTHER REFINE THE CONOPS INVESTIGATE THROUGH HIGH-FIDELITY MODELING THE SUB SYSTEM INTERACTIONS WITH THE CRYOGENIC SEAS ETHANE SATURATED WITH GN2 BUBBLING BUBBLE IMPACT ON SUB SURFACE AND INSTRUMENTS PROPELLER MOTOR AND BLADE CAVITATION AND BALLAST SYSTEM DRAW UPON EXPERIENCE OF THE LNG INDUSTRY REFINE NEW TECHNOLOGY APPROACHES IDENTIFIED BY PHASE I: BALLAST SYSTEM BUOYANCY CRYOGENIC MOTORS/PROPELLERS CRYOGENIC SCIENCE AND NAVIGATION INSTRUMENTS INVESTIGATE ALTERNATE AERODESCENT TECHNIQUES TO GET THE 6-M LONG SUB SAFELY TO KRAKEN MARE UTILIZE REFINED SCIENCE CRYOGENIC SEA MODELS AND UPDATED TECHNOLOGY APPROACHES TO REFINE PHASE I DESIGN PERFORM COMPASS CONCURRENT ENGINEERING SESSIONS: ADD SUB LAUNCH CRUISE AND DELIVERY TO THE CONCEPT UPDATE PHASE I SUB DESIGN PERFORM ALTERNATE RELAY SATELLITE-SUPPORTED DESIGN DEVELOP CANDIDATE TECHNOLOGY ROADMAPS