All ULTRA Anchor Series have ABS (The American Bureau of Shipping) Type Approval certificate. Stainless Steel SHP (Superior Holding Power), which is the anchor category that reaches the highest holding force defined by ULTRA Anchor ABS, is in the Special Service Anchors category. This certificate covers all ULTRA Anchors from 5kg to 360kg. This certificate confirms that the ULTRA Anchor is the safest anchor for all floors and can be used on boats working with ABS or other Class Organizations.