A naval museum on the slopes of Mount Carmel telling the story of the Aliyah Bet — the clandestine Jewish immigration to British Mandate Palestine in the 1930s and 1940s — and the post-1948 Israeli navy. The main exhibit is an immigrant ship beached in the museum compound, which visitors can walk through.
The naval wing adds submarines, missile boats, and material from later conflicts. Worth an hour, more if the maritime history is of interest.