TRELLEBORG OFFSHORE
Where any cable or hose connects to a structure,
normal movement during operation (dynamic
loading) or forces incurred during installation and
retrieval (static loading) can cause catastrophic
failure of the cable or hose, at the termination
point. The failure mode can be through collapse,
rupture of internal lines or even rupture of the
external layers leading to escape of the contents
to the environment.This can happen as the result of
a single event or be caused through fatigue damage
over time.
Bend limiting devices are provided to protect the
cable or hose from these situations and perform
the following functions:
• Maintain the manufacturers recommended
minimum bend radius (MBR) during the life
of the project
• Provide a suitable load path from cable or
hose, to xed structure
• Reduce point loading at the termination to
an acceptable level
Vor BS (Bend Stiffener)
Vor BS acquired its name because the conical
shape gradually increases the overall stiffness of
the cable or hose in order to prevent over bending
Vor BS (Bend Stiffener)
Protecting seismic
survey cables
at the termination point.Manufactured from
elastomeric material, a bend stiffener is suited to
the constant wave and current induced motion of
dynamic installations but can also be used for static
applications.
Vor BS are project specic and fully engineered
to accommodate the dened tension and angle
combinations as Trelleborg Offshore strive to
perform at every level to meet the customers’
needs. The two types of Bend Stiffeners are split
and non-split bend stiffeners.These are offered
in a variety of attachment methods, such as
brackets,anges & slide-on.
Vor GABS (Gun Array Bend Stiffener) and
Vor SS (Split Stiffener)
WWW.TRELLEBORG.COM/OFFSHORE
Examples and benets of some of these are below:
Vor SS (Split Stiffener)
• Fully split to allow bolt-on installation after
termination
• Completely eld installable and replaceable
• Improved resistance to general wear and tear
in offshore operations
• Customizable mounts
• Adaptable to a number of towing attachment
assemblies
• Fully spoolable
Vor AHS (Air Hose Stiffener)
• Slide on design
• Attached via band strap
• Proled internal interface detail
• Simple attachment method, no termination
machining required
• Cost effective solution for small air hoses
Vor DS (Dynamic Stiffener)
• Provides localized stiffness to the cable or
umbilical to maintain minimum bend radius.
• Customizable mounts
• Adaptable to a number of towing attachment
assemblies
• Customized design to meet customer load
and angle combinations
Information needed to specify a Vor BS:
Cable Properties:
• Cable diameter and tolerances
• Minimum bend radius in Static (storage) and
Dynamic (deployed) congurations
• Cable bend stiffness
Duty:
• Actual tension and angle combinations
• On deck handling cases
• Will system be spooled or not
• Deployment Scenario with full schematic drawing
Interface Design:
• Material preference
• Protective coating if required
• Size restrictions
Vor AHS (Air Hose Stiffener)
Vor DS (Dynamic Stiffener)
Brazil: +55 22 2106 4040
China: +86 137 9287 9241
France: +33 3 44 23 03 50
Norway: +47 32 23 20 00
Singapore: +65 6265 0955
United Kingdom: +44 1695 712 000
United States: +1 832 456 8300
Email: Offshore@trelleborg.com
Contact Us
Trelleborg Offshore delivers innovative and
reliable offshore solutions that maximize business
performance to meet your needs.
Our dedicated and highly skilled staff are always
on hand to provide seamless process support from
initial idea, through to delivery and beyond.