On U.S. charts, how you can tell if a named...

Question 1 / 2707066636ee928f7522a1c51a4b8

Question 1 of 2707066636ee928f7522a1c51a4b8

On U.S. charts, how you can tell if a named feature such as a rock (i.e. Great Eastern Rock in Block Island Sound) is submerged?

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Question 1 of 27070

On U.S. charts, how you can tell if a named feature such as a rock (i.e. Great Eastern Rock in Block Island Sound) is submerged?

🔍 Key Concepts

• U.S. chart symbology for underwater dangers (see chart legend and NOAA Chart No. 1) • Difference between how names are shown (text style/color) versus how hazards are shown (symbols/lines) • How cartographers show something that is underwater vs. above water at all stages of tide

💭 Think About

• Ask yourself: does the fact that a feature is submerged depend more on how the NAME looks, or on a specific SYMBOL drawn at its location? • Think about other submerged features you’ve seen on charts (like wrecks or reefs). What kind of graphical marking usually surrounds or overlays those hazards? • Which of these answer choices sounds like a standardized chart symbol that could be applied consistently to many hazards, not just to named rocks?

✅ Before You Answer

• Check how text styles and colors are normally used on charts (for land/water features vs. hazards). • Look for whether a circle around a feature is used on charts you’ve seen, and recall what its line style or color usually signifies. • Verify in NOAA Chart No. 1 which markings show a submerged rock as opposed to just labeling it by name.

Question 1 of 27070

On U.S. charts, how you can tell if a named feature such as a rock (i.e. Great Eastern Rock in Block Island Sound) is submerged?

style of type used to print the name

color of ink used to print the name

dashed circle around the feature

magenta circle around the feature

Question 1 / 2707066636ee928f7522a1c51a4b8

Question 1 of 2707066636ee928f7522a1c51a4b8

On U.S. charts, how you can tell if a named feature such as a rock (i.e. Great Eastern Rock in Block Island Sound) is submerged?

Back

Question 1 of 27070

On U.S. charts, how you can tell if a named feature such as a rock (i.e. Great Eastern Rock in Block Island Sound) is submerged?