What is High holding power or HHP anchors ?

Testing of HHP anchors

The HHP anchor is to be proof tested with load required by Table below  for an anchor mass equal to 1.33 times the actual mass of the HHP anchor. The proof loading procedure and examination procedure for HHP anchors are to comply with those for ordinary anchors,

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Ordinary anchors

• Ordinary anchors of “stockless” type are to be generally adopted and they are to be of appropriate design in compliance with the rules or practice of each individual Society.
• The mass of the heads of stockless anchors including pins and fittings are not to be less than 60% of the total mass of the anchor.
• The mass, per anchor, of bower anchor given in Table 1 is required for anchors of equal mass.

The mass of individual anchor may vary to 7% of the Table mass provided that the total mass of anchors is not less than that required for anchors of equal mass.