The original THR POOL® anchors are the result of centuries of ship anchor development, which started with the old well-known stock anchor. Following sailors’ demands for better tractability of the anchor, the still frequently used cast stockless bow anchor was developed.

Over the past decades, the so-called High Holding Power (HHP) and Super High Holding Power (SHHP) ship anchors were developed as a result of the need for more reliability and less weight. The leading types of these anchors are the POOL® anchors. THR has more than 40 years of experience and knowledge of the POOL® anchor, making THR a reliable partner both now and in the future.

In order to obtain type approval for High Holding Power, the anchor has to prove that it has a holding capacity of at least two times the holding capacity of a conventional anchor of the same weight during full-scale sea trials. The predicate HHP allows a weight reduction of 25% compared to a conventional anchor for the same equipment number.







An important comparative feature is the over-balanced anchor head of almost all POOL® anchor types. The centre of gravity of these anchors lies below the axle. As a result, the flukes are always vertical while heaving the anchor.

Contrary to most other ship anchors, which are cast or forged, POOL® anchors are made from welded high tensile steel plate material. Normally the anchor is connected to the vessel by means of a chain or a steel wire (and a chain forerunner).


Of course THR can supply you with the complete chain specification with the anchor. In order to do this, a consultation with SEC is required. That’s why it’s important to pay attention to the way the anchor and the chain are connected to each other on one side, and to the way the chain is connected to the vessel on the other side.