ULTRA Products by Boyut – exclusive European distribution by cromox®

ULTRA Anchor Ring

ULTRA Anchor Ring

The ULTRA Anchor Ring is a dual-purpose tool for anchoring and recovery. It adds weight to the chain to improve comfort and reduce swing in limited-space anchorages, and it can also support recovery when an anchor is fouled on the seabed.

ULTRA anchor ring stainless steel side view
three ULTRA anchor rings made from stainless steel side view
ULTRA anchor ring made from stainless steel with anchor chain

Key performance features of the ULTRA Anchor Ring

  • Adds weight to the chain for increased safety when anchoring with limited scope.
  • Can reduce swing area by increasing weight in the anchoring system.
  • Acts as a shock absorber to improve comfort at anchor by reducing boat movement.
  • Can be used as a recovery tool when the anchor is fouled on the seabed.
  • Can also support recovery if the chain becomes fouled.
  • Rope sizing and length guidance is available for practical use and handling.

Design and construction

The ULTRA Anchor Ring is intended to be used with a rope that allows controlled lowering and recovery handling. The guidance recommends selecting rope diameter with a margin for the additional forces that may occur when freeing a stuck anchor, and it notes that overly thin rope can make lowering the ring more difficult.

Rope guidance (as specified)

  • Minimum rope diameter recommendations
    • UAR27/60: minimum 5/16 in (approx. 8 mm)
    • UAR45/100: minimum 3/8 in (approx. 10 mm)
    • UAR80/176: minimum 1/2 in (approx. 13 mm)
  • Rope length should be slightly less than water depth, so the ring does not sit on the seabed or hug the chain.
  • Rope type is flexible, provided size and length are appropriate.

The ULTRA Anchor Ring as a problem solver

When anchoring with limited scope, additional weight in the rode can improve the behaviour of the anchoring setup. The ULTRA Anchor Ring is designed to add weight to the chain, increasing safety in busy or confined anchorages and reducing the vessel’s swing area. The added weight can also act as a shock absorber, improving comfort at anchor by reducing

A common scenario: The Anchor is stuck

The ULTRA Anchor Ring also functions as a recovery tool. If an anchor becomes stuck on the seabed, the ring can support recovery, particularly in situations where entering the water is not possible or not preferred. For areas known for fouling, the guidance recommends using a trip line and buoy before deploying the anchor. The same recovery approach can also be used if the chain itself becomes fouled.

Scenario II: The wind increases

If wind increases and the chain stretches straight, the ring’s weight may no longer be sufficient. In that case, the guidance recommends increasing scope.

Selecting the right ULTRA Anchor Ring model

Use the ULTRA Anchor Ring selection resources to choose a model based on your vessel type and key parameters (e.g., vessel weight/displacement and length). The selection table and main dimensions are also provided in the download section below.


Any questions? Contact us! 
We’re looking forward to your request.

Please complete all fields.