Alexdo
The page to which your link flows includes the following words
Begin quote
No part of the information contained in the MSD website and software may be stored in a retrieval system, or transmitted in any form, or by any means without prior permission in writing from MSD.
The following actions are forbidden:
- Bulk-downloading of data contained on the site
- Use of downloaded data for financial gain
- Use of a robot or similar remote device to download large batches of data.
End Quote
It is probable that copyright lawyers would consider that Shipspotting is a retrieval system, and that uploading to it would be a transmittal.
Until written approval can be obtained and quoted as being from MSD, I believe information from MSD should not be uploaded to this site.
Clyde