Tank Beach (Nanasu Coast)

Tank Beach on the Nanasu Coast of Saipan is an exposed beach-and-reef surf spot with quite reliable surf, especially in August. The spot is described as having mixed beach/reef characteristics and generally working as a consistent option on this windward stretch when conditions are right. Because the break sits over sharp reef and rock, it carries multiple hazards: rocks, sharks, and sea urchins (and sharp reef/debris are specifically noted). Strong rip currents are also a key concern, particularly during larger swells, when conditions can become messy and more dangerous. Surf quality is reported to depend on wind direction. East winds tend to make the water choppy, while west or southwest winds are described as providing cleaner faces. The spot is also tide-sensitive because the reef can be very shallow at low tide, so checking tide before entering is strongly advised. For timing, August is specifically reported as the best month in the surf-spot guide data, while September and October are also reported as among the best months. The overall scene is low-profile, with mild localism noted, and the beach is additionally known for turtle nesting—so riders should respect any marked areas.