The Sentinel anchor has a traditional lightweight design. Also known as Danforth, Fluke, or Spade anchors, it has strong wide flukes which penetrate quickly and firmly. Sentinel 18 - 7.5kg Anchor for boats 31ft - 34ft. (For houseboats or storm anchors use a bigger size)  Fully welded crown configuration provides properly engineered angles for ultimate holding power. Long lasting galvanised finish.  To complete the anchor assembly, add chain and anchor rope.