Which current is described as flowing parallel to the beach in the offshore region outside the surf zone?

Master the Navigation, Seamanship, and Shiphandling (NSS) – Officer of the Deck (OOD) Phase 2 Exam with engaging flashcards and multiple choice questions, complete with hints and explanations. Prepare comprehensively for your test!

Multiple Choice

Which current is described as flowing parallel to the beach in the offshore region outside the surf zone?

The movement described is the longshore (littoral) current—the water flows along the coast, parallel to the shoreline, driven by waves breaking at an angle. This alongshore flow occurs in the nearshore and can extend offshore just outside the surf zone, carrying sediment and guiding littoral drift. The option that matches this is the one describing flow parallel to the beach. Perpendicular-to-shore flows (toward the sea) or diagonally across the surf zone describe cross-shore motions like rip currents or undertow, which are not the primary alongshore current.

The movement described is the longshore (littoral) current—the water flows along the coast, parallel to the shoreline, driven by waves breaking at an angle. This alongshore flow occurs in the nearshore and can extend offshore just outside the surf zone, carrying sediment and guiding littoral drift. The option that matches this is the one describing flow parallel to the beach. Perpendicular-to-shore flows (toward the sea) or diagonally across the surf zone describe cross-shore motions like rip currents or undertow, which are not the primary alongshore current.

More practice questions