Which of the following is NOT one of the six types of anchors?

The six types of anchors recognized in marine applications include designs suited for different conditions and types of seabed. The DANFORTH anchor is a fluke-style design known for its high holding power relative to its weight, making it effective in sand or mud. The NAVY STOCKLESS anchor is a variation of the traditional anchor, designed to stow more efficiently and prevent snags, while also providing good holding power.

The STATO is actually a lesser-known anchor type, not widely recognized as one of the primary categories. The ADLIVER does not correspond to any conventional anchor type documented in marine practice, indicating it is not a valid choice among the recognized anchor types.

Therefore, identifying the ADLIVER as the choice that does not belong among the six types of anchors is accurate, as it reflects the criteria for anchor classifications and the conventional terminology used in maritime contexts.