🔍 Key Concepts

• Tidal Current Tables and what they are used for • How currents behave in large coastal harbors compared to open ocean • Whether currents in harbors tend to be constant, weak, or variable

💭 Think About

• Think about where mariners would look to find information about current velocity when planning harbor transits • Consider if professional mariners could safely operate in busy harbors if the current were completely unpredictable • Ask yourself whether the current in a large harbor stays the same all day, or changes with the tide and local geography

✅ Before You Answer

• Check which option best matches how harbor pilots and ship captains actually plan for currents • Eliminate any choice that conflicts with the idea that safe navigation requires some ability to predict current velocity • Be cautious of answers that say always constant or never a concern in areas where large ships maneuver in confined waters