1. Shipyard should not be capitalized, nor should it have the apostrophe-s
2. Things are not brought or driven "into" a premises- they are brought or driven "onto" premises.
3. I suggest the first part should be more precise and formal as in: 'Only items having received written permission (authorization) from the shipyard will be permitted to be driven or brought onto...' OR (more simply) 'Only items having received written authorization will be allowed on the premises...'
The blanket term 'shipyard' may be too general. Probably better to specify a person (title) or office the permission/authorization must come from.
Interested in Language