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 inside the surf zone and flowing toward the beach?

This is an onshore flow in the nearshore zone. Currents inside the surf zone that move toward the beach are called inshore (or onshore) currents. They form when incoming waves break and momentum is transferred toward the shore, causing water to pile up near the coastline and drive a landward current within the nearshore area. Ebb currents move seaward as tides push water back out to sea, so they aren’t moving toward the beach. Thermohaline currents are large-scale deep-ocean circulations driven by density differences and aren’t defined by the surf-zone region. Wind-driven currents can occur nearshore but aren’t specifically the shoreward flow that characterizes the inshore current, which is defined by its location in the surf zone and direction toward the shore.

This is an onshore flow in the nearshore zone. Currents inside the surf zone that move toward the beach are called inshore (or onshore) currents. They form when incoming waves break and momentum is transferred toward the shore, causing water to pile up near the coastline and drive a landward current within the nearshore area.

Ebb currents move seaward as tides push water back out to sea, so they aren’t moving toward the beach. Thermohaline currents are large-scale deep-ocean circulations driven by density differences and aren’t defined by the surf-zone region. Wind-driven currents can occur nearshore but aren’t specifically the shoreward flow that characterizes the inshore current, which is defined by its location in the surf zone and direction toward the shore.