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Frequently Asked Questions

QuayQuip's engineering team is here to help.

We get asked for advice every day so we're creating a series of FAQ sheets to answer the most popular questions.  These will be ready soon, but meantime why not see if your question is listed below and contact us for the answer.


Fenders
What happens when a cone or cell fender fills up with water?
How does closed box construction of fender panels benefit me?
What are the merits of pneumatic and foam fenders?
My old fenders are obsolete – what can I do?
How do I protect a berth corner?
What should I consider when specifying a fender panel?
How can I reduce forces in a load sensitive structure?
Can I economically extend the service life of my berth?

Mooring
How many ropes can I put on a bollard?
What angle should mooring lines be connected to bollards?
Which is better – cast steel or cast iron?

Fender Design
How do I work out the best spacing of fenders?
How do I cope with a big range of ship sizes?
What hull pressure should I use for my ships?
How do I estimate berthing velocities?
What is the velocity vector angle and why does it matter?
Why are there different methods to estimate added mass?
What is a velocity correction factors and is it important for my design?

Specifications & Testing
What is PIANC testing?
How do I compare different UHMW-PE grades?
How do I specify a good rubber compound for marine fenders?

Materials & Environment
Which paint system works best and why?
What does ozone do to my fenders?
How can I compare different stainless steels?
Can I mix stainless steel, mild steel and galvanised parts?