Besides the actual amount of bare steel...

Question 1 of 270705eccef9cbacbc34ba4d45b40

Besides the actual amount of bare steel surface, the amount of current flow required for the cathodic protection of a vessel is dependent upon what factor or factors? The speed of the ship traveling through the water. The temperature of the water.

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Question 1 of 27070

🔍 Key Concepts

• Cathodic protection basics: how current flow protects steel hulls from corrosion • Effect of ship speed on seawater flow, oxygenation, and paint/scale on the hull • Effect of water temperature on corrosion rate and electrical resistance of seawater

💭 Think About

• Think about how moving faster through seawater might change how much protective current is needed on the hull surface • Consider how colder vs. warmer water affects both corrosion rate and the conductivity (resistance) of seawater • Ask yourself whether either factor (speed or temperature) would reasonably change how much current is needed to keep the steel fully protected

✅ Before You Answer

• Confirm which factors are known to influence corrosion rate and electrolyte (seawater) resistance in cathodic protection systems • Check if increased flow rate of water past the hull generally increases or decreases current demand for cathodic protection • Verify whether water temperature has a recognized effect on the required protective current density for steel in seawater