Prohibition signs
Do not obstruct
- IMO code
- PSS020
- ISO 7010 number
- P023
Where you will meet it
At fire doors, emergency exits, emergency equipment stations and hydrants.
What it means in practice
Do not obstruct. This spot must stay clear at all times: a blocked escape route or hydrant costs time you do not have in an emergency.
Legal basis
Annex to IMO resolution A.1116(30) (adopted 05.12.2017), table of prohibition signs. Graphic pattern of the symbol: ISO 7010.
This is not a legal text: in any doubt the current wording of the resolution and regulations decides.
Download
Sign colours are normative. The file is public domain or CC0 (a Commons recreation of the symbol named by the IMO annex).