Mandatory signs
Close and secure hatches in launch sequence
- IMO code
- MSS023
- ISO 7010 number
- M037
Where you will meet it
In the lifeboat and at the launching station, as part of the sign sequence.
What it means in practice
A launch sequence step: close and secure the hatches of the boat before lowering to the water.
Legal basis
Annex to IMO resolution A.1116(30) (adopted 05.12.2017), table of mandatory 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).