Holding power in the most extreme conditions

Redefining boundaries

No anchor can deliver the holding power of the STEVSHARK®REX. The application of drag embedment anchors has been expanded to the most remote and challenging territories on earth. Strong soils are no longer prohibitive, opening up the economic possibility for operators to develop new energy resources in a much larger area globally.

Video: STEVSHARK®REX Introduction
Video: STEVSHARK®REX 7mT Prototype test
Video: STEVSHARK®REX 18mT Australia

Main advantages of the STEVSHARK®REX

Ultimate holding capacity

Depending on the location, the holding power of the STEVSHARK®REX proved to be 22% to 47% higher than the previous STEVSHARK® version.

22% to 47% higher UHC compared to older STEVSHARK®


The application boundaries of drag embedment anchors can now be expanded to the most remote and challenging territories on earth. Strong soils no longer represent an obstacle.

Hard soils Harch clays, cemented carbonate and calcarenite rocks

Features & specifications of the STEVSHARK®REX

With the STEVSHARK®REX design, Vryhof chose to take the current STEVSHARK® as a departing point. The set of design parameters was based on the STEVSHARK® inherent strong points, but was to also include improvements that became in reach due to better understanding of anchor design and STEVSHARK®’s behavior over the last decade.

  • Features STEVSHARK®REX
    STEVSHARK numbered anchor
    1. Wide spread shanks and redesign geometry improve penetration, stability and strength.
    2. Anchor shackle protected inside shank head avoiding chaser damage.
    3. One pair of sharp teeth cuts the seabed at any time.
    4. Sharp fluke points to enhance initial penetration.
    5. Leading edges where the anchor touches soil first.
    6. Hollow fluke takes ballast up to 60% anchor weight.
    7. 4 angle settings, expand versatility on layered soil.
    8. Shank design assures stability on deck.
    9. Deep shank width increases side stabilty and side loading and side loading stength.
    10. Low centre of gravity assures correct arrival orientation at the seabed.
    11. Strong padeyes.
  • Anchor design

    The overall anchor geometry is a combination of improvements in anchor penetration, handling and efficiency. Anchor efficiency of the STEVSHARK® has increased over the current version. Type approval was obtained from main Class Authorities upon finalizing the design for manufacturing. The all-new STEVSHARK®REX was tested several times in traditional and challenging soil conditions consistently behaving as predicted and proving its superior performance.

  • HSE minded
    • Stability on deck
    • Assembly blocks
    • Stability on stern roller
    • Easily accessible and strong recovery or piggy back
  • 25 years of hard soil experience

    The STEVSHARK® represents 25 years of operational experience with the STEVSHARK® anchor of which some 5,000 were sold. This implies the vast experience recorded in hard soils such as stiff/hard clays, dense sands, cemented and over-consolidated soils and rocks. This experience includes soils where a conventional anchor may penetrate the top layer, but may however prove unable to reach the targetted depth due to complexity of a deeper soil layer. The STEVSHARK®REX tackles these complicated soils more effectively.

  • Soil adaptability

    Although specifically developed for anchoring in areas with hard soils, the new STEVSHARK®REX can be set at different fluke/shank angles, allowing adjustment to successfully anchor in softer soils without having to change the anchor type.

  • Uplift capability

    Although primarily applied for anchoring in harder soils, when used in soft soils the new STEVSHARK®REX has larger uplift capability allowing it to also moor in deeper waters.

  • Higher strength

    Challenging soil also impose extraordinary structural loads on the anchor. STEVSHARK®REX is designed for these and match the strength of R5 + 30% chains.

  • Wide field of application

    Works on hard soils, subsea permafrost, complex gravel and over-consolidated clays. Its handling features have been improved to allow use on relatively small construction and dredging vessels, where its higher efficiency allows for using a smaller anchor for the same holding capacity.

    • Cutter points
    • Internal ballast
    • External ballast
    • Anchor tracking
    • Recovery bridle systems
    • Teethless - rackable version
  • Ultimate Holding Capacity

    Always contact Vryhof for appropriate calculations.

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