First of all: simply telling us things we don't know. On almost every page, there is a Feedback block on the left where you can leave your remarks.
We're also very happy with any pictures you have of dredging equipment. On every equipment page there is a link called 'send us your pictures of ..' which will get you to a place where you can upload them. If you have lots of pictures we can use, you can also send us ancontent [at] dredgepoint [dot] org (subject: Pictures%20for%20dredgepoint) ( email) and we'll get in touch.
If you'd like, you can also become a volunteer and manage part of this website. You can let us know by sending us an webmaster [at] dredgepoint [dot] org (subject: Become%20a%20volunteer) (email).