154.1830—Warning sign.
(a)
The master shall ensure that a vessel transferring cargo, while fast to a dock or while at anchor in port, displays a warning sign:
(b)
Except as provided in paragraph (e) of this section, each warning sign must have the following words:
(4)
Be 5.1 cm (2 in.) wide, except for “M” and “W” which must be 7.6 cm (3 in.) wide, and the letter “I” which may be 1.3 cm ( 1/2 in.) wide; and
(e)
The words “No Smoking” and “No Open Lights” may be omitted when the cargoes on board a vessel are not flammable.
(f)
When a vessel carries or transfers vinyl chloride, the warning sign under paragraph (b) of this section must also have the words “Cancer Suspect Agent.”