In the machinery space of all uninspected...

Question 1 / 2707066636ee728f7522a1c518025

Question 1 of 2707066636ee728f7522a1c518025

In the machinery space of all uninspected motor vessels, there must be one type 20-B hand portable fire extinguisher for which of the following?

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Question 1 of 27070

In the machinery space of all uninspected motor vessels, there must be one type 20-B hand portable fire extinguisher for which of the following?

🔍 Key Concepts

• 46 CFR Part 25 – Requirements for uninspected vessels (fire extinguishers) • Difference between B.H.P. (brake horsepower) and S.H.P. (shaft horsepower) for main engines • Relation between engine power and the number/size of extinguishers required in machinery spaces

💭 Think About

• Is the regulation written in terms of the power delivered to the propeller or the rated power output of the engine itself? • How does the Coast Guard usually scale portable extinguisher requirements: per smaller power increment (e.g., 500) or larger power increment (e.g., 1000)? • What UL/Coast Guard type 20-B corresponds to in the old B-I / B-II size system, and how many of those are tied to machinery-space power rating?

✅ Before You Answer

• Confirm whether the text of 46 CFR 25.30-20 refers to B.H.P. or S.H.P. • Verify the exact horsepower increment (500 vs 1000) used in the table/paragraph for machinery space extinguishers on uninspected motor vessels • Make sure you connect type 20-B with the correct USCG size class (e.g., B-II) in the regulation.

Question 1 of 27070

In the machinery space of all uninspected motor vessels, there must be one type 20-B hand portable fire extinguisher for which of the following?

500 S.H.P. of the main engines or fraction thereof

1000 S.H.P. of the main engines or fraction thereof

500 B.H.P. of the main engines or fraction thereof

1000 B.H.P. of the main engines or fraction thereof

Question 1 / 2707066636ee728f7522a1c518025

Question 1 of 2707066636ee728f7522a1c518025

In the machinery space of all uninspected motor vessels, there must be one type 20-B hand portable fire extinguisher for which of the following?

Back

Question 1 of 27070

In the machinery space of all uninspected motor vessels, there must be one type 20-B hand portable fire extinguisher for which of the following?