Jeremiah Halpern

Captain Jeremiah Halpern (; also known as Yirmiyahu Halpern and Yirmiyahu Halperin) (b. Smolensk, Russia, 1901; d. Tel Aviv, Israel, 1962) was a Revisionist Zionist leader in Palestine who first came to prominence when he served as ''aide de camp'' to Ze'ev Jabotinsky in the 1920s when the latter was head of the Haganah in Jerusalem.

Halpern, a certified ship's captain, was known as Rav Hahovel (captain of the ship) for his role in the development of Jewish seamanship. Provided by Wikipedia