What type of area do crossed diamonds mark?

Crossed diamonds mark swimming areas, signaling to boaters that they should proceed with caution and keep a safe distance. These markings are crucial for ensuring the safety of swimmers and are intended to inform boat operators of the need to slow down and watch for people in the water. The presence of these markers indicates that this is a designated space where swimming is permitted, which must be protected from boating traffic to prevent accidents and ensure safety for all water users.

In contrast, unobstructed channels would be marked differently, focusing on navigational guidance for boats, rather than signaling caution for swimmers. Areas unrestricted to boats could have different markings and do not specifically indicate the presence of swimmers. Ski zones are typically marked with specific symbols that relate to water skiing, which are distinct from the crossed diamond shape indicating swimming areas.