571—37.3(462A) Fire extinguishers.

1. 37.3(1)  Fire extinguisher type. Fire extinguishers shall be a U.S. Coast Guard-approved B-I or B-II type as described in 33 CFR Part 175, Subpart E (June 1, 2024).

2. 37.3(2)  Number of fire extinguishers. The number of fire extinguishers required shall be dependent upon motorboat class and in compliance with 33 CFR Part 175, Subpart E (June 1, 2024).

   Class	Minimum number of 5-B portable fire extinguishers
   	If no fixed fire extinguishing system	With fixed fire extinguishing system
   I (less than 16 ft.)	1	0
   II (16 ft. to under 26 ft.)	1	0
   III (26 ft. to under 40 ft.)	2	1
   IV (40 ft. to 65 ft.)	3	2

3. 37.3(3)  Fire extinguisher condition. Fire extinguishers must:

   1. a. Be on board and readily accessible;
   2. b. Not be expired or appear to have been previously used; and

   3. c. Be maintained in good and serviceable working condition, meaning:

      1. (1) If the extinguisher has a pressure gauge reading or indicator, the reading or indicator must be in the operable range or position;
      2. (2) The lock pin is firmly in place;
      3. (3) The discharge nozzle is clean and free of obstruction; and
      4. (4) The extinguisher does not show visible signs of significant corrosion or damage.

The number and type of fire extinguishers required for motorboats within the state of Iowa are as follows:

[ARC 9219C, IAB 5/14/25, effective 6/18/25]