Final answer:
Generally, powered boats, especially those with enclosed engine compartments or fuel tanks, must have a fire extinguisher onboard to comply with safety regulations.
Step-by-step explanation:
The question of which boats are required to have a fire extinguisher on board largely pertains to safety regulations that apply to various types of watercraft. It is not specific to any boat mentioned in the provided excerpts; however, as a general rule, most powered boats, especially those with enclosed engine compartments or fuel tanks, are required to carry a fire extinguisher.
Boats like the Lowania, as described in the first quote, that might be larger and equipped with an engine, are typically required to have a fire extinguisher onboard to address potential fire hazards.
In summary, while these details do not directly answer the question, they suggest that the rule of thumb is to have fire extinguishers on powered vessels, specifically those with enclosed fuel areas, for safety purposes.
According to boating safety regulations, boats that carry portable fuel tanks, have closed compartments where flammable or combustible materials are stored, or have a permanently installed fuel tank must have a fire extinguisher on board. Therefore, the boat that is required to have a fire extinguisher on board is the Lowania.