Which type of ice is a hazard to navigation?

Question 1 of 2707066636ee728f7522a1c518d7d

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Question 1 of 27070

Q

Which type of ice is a hazard to navigation?

🔍 Key Concepts

• Different forms of sea ice and glacial ice that vessels may encounter • How size, hardness, and freeboard (height above water) affect navigational risk • Which ice types are specifically noted in navigation texts and ice reports as dangerous to hulls and propellers

💭 Think About

• Ask yourself which ice type, if struck, is most likely to cause structural damage to the vessel rather than just affecting surface appearance of the water • Consider which of these terms is commonly associated with small but very hard remnants of larger icebergs • Think about which ice types mainly indicate a forming ice cover versus those that are solid obstructions to safe passage

✅ Before You Answer

• Identify which option refers to remnants of icebergs rather than newly forming sea ice • Determine which ice types are generally thin or fragile surface ice and therefore less likely to seriously damage a ship • Recall from ice navigation guidance which term is flagged as a serious collision hazard even though it may be difficult to see in the water