Inquiry about Commercial Tourist Submarine

I am looking to acquire a commercial tourist submarine to offer underwater excursions along the Mumbai coast. Please provide comprehensive details on the following: - Cost and available passenger capacity configurations - Battery consumption and charging requirements - Ballast tank and emergency air/oxygen reserves - Passenger safety systems, life support endurance, and certifications - Critical spare parts included in the purchase package - Warranty terms on hull, viewports, battery packs, and thrusters - Expected operational lifespan under regular maintenance - Required crew and operator certifications - Maximum certified operational depth We are seeking a reliable, long-term manufacturing partner capable of providing technical onboarding, pilot training, and after-sales support.