Unfortunately the umbrella coverage has not been specified in terms of:

I am very familiar with ship unloading in various locations and have long recognised the problem. Manufacturers of loaders and unloaders never work together, probably intentionally. A ship is loaded at one place and unloaded thousands of kilometers away by parties who really ought to have communicated before undertaking their respective projects. Suppose freight containers had no tops. That absurdity applies to bulk handling but nobody gives a hoot.

Tell us more: a lot more, about your situation. ■