DYNA II®

DYNA II

DYNA II Mid-Span Cable Suspension System

Designed for Faster, Safer High-Load Seismic Towing

DYNA II system offers multiple degrees of freedom which allow spreader rope loads to pass through with minimal effect on the lead-in cable.

The tool-free design allows for ease of installation, with faster cable deployments and retrievals. Installation can be performed anywhere along the cable for unlimited attachment possibilities in a few simple steps:

  • Wrap the helical rods on the lead-in
  • Install split housing and collar assembly; secure with quick release pins
  • Mount suspension arms and sheaves
  • Installation complete

helical rods on cable

Apply helical rods on cable

Install split housing and collar

Add suspension arms

secure in place DYNA II

Secure in place

Several configurable kits and accessories are available:

    • Sheave Kit
    • Rotating Sheave Mount Kit
    • Sheave Pin Kit with Weak Link (break away feature at specified load)
    • Pad Eye for float attachment and back-up rope
    • Flotation DYNA II

Reusable Hardware Offers Significant Cost Savings

The DYNA II Retermination Kit includes new helical rods and inserts to allow you to re-use the outer hardware. Storage on the cable drum is possible by removing the outer hardware while leaving the housing or the helical rods intact.

Product Description

DYNA II Suspension System (DYNA II) allows high-strength cable connection with many attachment possibilities. With reusable hardware, re-termination kit availability and multiple options an accessories, the DYNA II offers tremendous value.

Applications

  • Towed cable arrays
  • Attachment of lines or paravanes to tow underwater cables in flank positions aft of a vessel
  • Buoy attachment to restrain cable torque and rotation
  • Surface and subsurface float mid-span cable attachment points

Features and Benefits

  • Design allows for ease of installation with faster cable deployments and retrievals
  • Installation can be performed quickly anywhere along the cable by wrapping helical rods on the cable lead-in and installing the split housing and collar assembly with secure quick release pins
  • Designed to handle in-line loads equal to safe qorking load of the cable and side loads of 40 tonnes (metric)
  • Provides tailored bending protection and eliminates localized clamping forces through the use of helical rod layers
  • Re-useable hardware and re-termination kit availability offers significant cost-savings
  • Several configuration kits and accessories are available to match your application
    • Weak Link (break away feature)
    • Multiple pad-eye attachment option
    • Sheave kit
    • Rotating sheave kit

Typical Configuration of the DYNA II

  1. Sheave Pin or Optional Weak Link
  2. Sheave
  3. Hand Nut & Q-R Pin
  4. Rotating Sheave Mount
  5. Housing
  6. Suspension Arm Pin Assy
  7. Collar Assembly
MODEL APPROX. WEIGHT (W/O RODS) DESIGNED FOR SPUR LINE
OR SPREADER ROPES		 OVERALL DIMENSIONS
(L x W x H)
DYNA II 49 kg (108 lbs) N/A 55.9 cm x 15.2 cm x 30.5 cm (22" x 6" x 12")
DYNA II w/ Sheaves 59 kg (130 lbs) ≤ 52 mm 55.9 cm x 15.2 cm x 30.5 cm (22" x 6" x 12")
DYNA II w/ Rotating Arms & Sheaves 82 kg (180 lbs) ≤ 52 mm 86.4 cm x 15.2 cm x 30.5 cm (34" x 6" x 12")

DHSS II Options and Accessories

  • SHEAVES: available for spur lines or spreader ropes up to 52mm
  • ROTATING SHEAVE MOUNT: adds an extra degree of freedom; allows spreader ropes to self-align for reliability during turns
  • WEAK LINK: used with rotating sheave arms, designed to release at a specified load, ie (25T – 40T) to protect equipment from accidental overloads
  • PAD-EYE: pad-eye collar option allows for 2, 3 or 4 pad-eye attachment points.

Learn More

Schedule a consultation to determine whether DYNA II system is right for your subsea cable project.

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