Louis-Philippe Crepin was a French marine painter. Together with Théodore Gudin, he was appointed as one of France's first two Peintres de la Marine in1830.
He studied marine painting with Joseph Vernet and landscapes with Hubert Robert. Before that, he had been a sailor with four years of experience as a helmsman and gabier. He had his first exhibit at the Paris in 1796 with "La sortie du port de Brest". He would hold showings there intermittently until 1835.
As early as 1817, he recieved a letter from the "Ministre de la Marine et des Colonies", Laurent de Gouvion-Saint-Cyr, giving him a twenty-year commission to create marine paintings for the government; especially the Ministère de la Marine, where he set up a workshop. This was, however, tempered by a disappointment; the position of painter to the Admiral of France (Louis Antoine, Duke of Angouleme) had gone to Louis Garneray.
At the age of fifty-eight, in part due to a bit of self-promotion, he was appointed as one of the first two offical marine painters of the French government. That same year, together with the much younger painters Eugène Isabey and Léon Morel-Fatio, he took part in the Invasion of Algiers. His new position eventually became somewhat ceremonial, as he ceased to exhibit in 1836.
His best known painting is "Combat de la frégate française La Bayonnaise contre la frégate anglaise l'Embuscade 14 décembre 1798", which was commissioned by Napoléon for display at the Tuileries. It was shown at the Salon in 1801. Until 1834, it was hung in the former residence of the Empress at the Château de Saint-Cloud, the was transferred to Versailles by King Louis-Philippe. Since 1935, it has been at the Musée National de la Marine. He also was one of the fourteen artists who contributed to Episodes maritimes, along with Garneray, Gudin, Isabey, Biard and others.