What is the danger of carbon monoxide on a boat?

Carbon monoxide is a significant danger on a boat because it is colorless and odorless, making it nearly impossible to detect without proper equipment. This characteristic allows the gas to accumulate without the awareness of those on board, increasing the risk of poisoning. Exposure to carbon monoxide can lead to serious health issues, including headaches, dizziness, confusion, and even death in severe cases.

In contrast, the other options do not accurately represent the risks associated with carbon monoxide. For instance, carbon monoxide is not easily detectable, which is what makes it particularly hazardous. Additionally, it can be dangerous even in small amounts over time rather than only in large concentrations. Mechanical issues could arise from exhaust systems or internal combustion engines, but they are not the primary health risk associated with carbon monoxide on a boat.