What is the primary characteristic of a fluke-style anchor?

The primary characteristic of a fluke-style anchor is its ability to achieve holding power by using its pointed flukes which dig into the bottom substrate. This design allows the anchor to set securely in various types of bottom materials, including sand and mud, providing stability for a vessel. When deployed, the anchor's flukes penetrate the seabed, which helps it to resist being dislodged by water movement or wind, ensuring the boat remains in place.

The other options do not accurately describe the fluke-style anchor. While floating anchors may exist, fluke-style anchors specifically are not designed to float; instead, they are meant to sink and dig into the seafloor. Although fluke-style anchors can work in rocky situations, they are not limited to just those environments and can be effectively used in a range of substrates. Furthermore, this type of anchor is not exclusive to large vessels; it is commonly used for smaller boats as well, making it versatile across different sizes and types of watercraft.