The paper devotes the proximity control for linear features that will apply for ship control in closed approach. In nautical practice of Vietnam, the ship has been encountered in the special situations, such as: coming approach ship to ship, ship to floating object, ship to mobile object... In order to solve this issue, the author presents his researches about task of the problem of the regulator of the optimal time; also he gives the solution of the problem of time-optimal controller for a linear system with constant parameters. Accordingly, the result is applied to design and create a control system to ensure the meeting of movements of ships.