Ok so it's not a space rocket ..... Just the remains of a laser sailing dinghy.
Sadly at the time we couldn't recover either the speed boat or the sailing dinghy as the parts are too large. We will let the land owners know or if the owners can be traced they may be responsible for the clean up.
Many things get washed up and some are more hazardous that other items. If your not sure what the item is dial 999 and ask for the Coastguard.