Cook the rice in salted water until done (in a ratio of 1: 2). Mix with the tuna and season with salt and pepper.
At the same time, boil the artichokes in salted water for 10 minutes. Then cut in half and remove the hay. Wash and slice the tomatoes.
Wash and peel the carrots and potatoes, cut into small cubes and cook in salted water until cooked. Drain and pour the vinaigrette over it.
Place the rice and tuna mixture in the middle of a large plate. Place the carrot and potato mixture around it. Place the tomatoes on top and add a little salt. Place the artichokes on the outside of the plate.