The paradox was first formulated by James M. Supplee (1989), where a non-rigorous explanation was presented. George Matsas has analysed this paradox in the scope of general relativity and also pointed out that these relativistic buoyancy effects could be important in some questions regarding the thermodynamics of black holes. A comprehensive explanation of Supplee's paradox through both the special and the general theory of relativity was presented by Ricardo Soares Vieira. Hrvoje Nikolic noticed that rigidity of the submarine is not essential and presented a general relativistic analysis revealing that paradox resolves by the fact that the relevant velocity of the submarine is relative to Earth (which is the source of the gravitational field), not relative to the observer.