Marine Safety Sign

Marine Hazard & Warning Signs (Yellow)

Yellow hazard and warning signs for vessels, offshore platforms, docks and beaches – electrical and voltage warnings, toxic and H₂S gas, CO₂ protected areas, hot surfaces, overhead loads, fall overboard, chemicals and water-safety warnings, with or without Danger/Warning/Caution text.

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182 hazard and warning signs
Symbol-only and Danger / Warning / Caution text versions
Voltage signs from 110 V to 6600 V
Rigid fiberglass or self-stick polyester – UV and salt-water resistant

How to order

Choose your sign in the picker – search by name or stock number, or tap a size to filter.
Pick a material – the full stock number (e.g. 1802-150) is added to your order automatically.
Enter a quantity and add to cart. Repeat for as many different signs as you need – they all go in one order.

Price per sign

Size	CM-150 Rigid Polyester	CM-550 Self-Stick Polyester
150 × 150 mm 5.9″ × 5.9″	$7.20	$4.32
150 × 200 mm 5.9″ × 7.9″	$9.60	$5.76

Materials

CM-150 Rigid Polyester – Tough all-weather polyester laminated to a rigid 2.28 mm fiberglass base with a polyester overcoat. UV, salt-water and abrasion resistant, mounted with strong adhesive foam strips. Stock # ends in -150.
CM-550 Self-Stick Polyester – Ultra-durable polyester film with an aggressive acrylic self-stick adhesive and clear polyester overcoat, for direct interior or exterior application. UV, salt-water and moisture resistant. Stock # ends in -550.

All 182 signs in this series

1802 Acid/Corrosive Materials (150 × 150 mm)
1803 Arc flash warning (150 × 150 mm)
1804 Area Protected by CO2 (150 × 150 mm)
1805 Asphyxiating atmosphere warning (150 × 150 mm)
1806 Automatic start-up warning (150 × 150 mm)
1807 Battery charging warning (150 × 150 mm)
1808 Bio hazard (150 × 150 mm)
1809 Boating area warning (150 × 150 mm)
1810 Crocodiles, alligators or caymans warning (150 × 150 mm)
1811 Crushing of hands warning (150 × 150 mm)
1812 Crushing warning (150 × 150 mm)
1813 Danger of death (150 × 150 mm)
1814 Deck opening (150 × 150 mm)
1815 Deep shelving beach (150 × 150 mm)
1816 Deep water (150 × 150 mm)
1817 Diving area (150 × 150 mm)
1818 Drop-off hazard (150 × 150 mm)
1819 Electrical (150 × 150 mm)
1820 Explosive atmosphere (150 × 150 mm)
1821 Explosive risk (150 × 150 mm)
1822 Falling ice (150 × 150 mm)
1823 Falling man (150 × 150 mm)
1824 Falling objects (150 × 150 mm)
1825 Fall overboard (150 × 150 mm)
1826 Fall risk (150 × 150 mm)
1827 Flammable materials (150 × 150 mm)
1828 Forklift trucks (150 × 150 mm)
1829 Gas cylinders (150 × 150 mm)
1830 Hand crushing between press brake and material warning (150 × 150 mm)
1831 Hand crushing between press brake tool warning (150 × 150 mm)
1832 Harmful irritant (150 × 150 mm)
1833 Heavy duty forklift (150 × 150 mm)
1834 Helicopter blade (150 × 150 mm)
1835 High noise area (150 × 150 mm)
1836 High surf or large breaking waves warning (150 × 150 mm)
1837 Hot surface (150 × 150 mm)
1838 Hot liquid (150 × 150 mm)
1839 Hot surface (hand symbol) (150 × 150 mm)
1840 Incoming tides warning (150 × 150 mm)
1841 Inflatable warning (150 × 150 mm)
1842 Kite surfing warning (150 × 150 mm)
1843 Land rig crane (150 × 150 mm)
1844 Laser beam warning (150 × 150 mm)
1845 Low temperature (150 × 150 mm)
1846 Magnetic field (150 × 150 mm)
1847 Mind your head (150 × 150 mm)
1848 Mind the lift doors (150 × 150 mm)
1849 Moving/rotating load (150 × 150 mm)
1850 Non-ionizing radiation pole (150 × 150 mm)
1851 Offshore crane (150 × 150 mm)
1852 Optical radiation warning (150 × 150 mm)
1853 Overhead load warning (150 × 150 mm)
1854 Oxidizing substance warning (150 × 150 mm)
1855 Parasailing warning (150 × 150 mm)
1856 Poison Fish (150 × 150 mm)
1857 Poison/toxic hazard (150 × 150 mm)
1858 Pressurized cylinder warning (150 × 150 mm)
1859 Pressurized tanks (150 × 150 mm)
1860 Quicksand or mud, deep mud or silt warning (150 × 150 mm)
1861 Radioactive materials (150 × 150 mm)
1862 Rapid movement of workpiece in press brake warning (150 × 150 mm)
1863 Risk (150 × 150 mm)
1864 Rowing area warning (150 × 150 mm)
1865 Sailing area warning (150 × 150 mm)
1866 Sand yachting warning (150 × 150 mm)
1867 Sewage effluent outfall warning (150 × 150 mm)
1868 Shallow water (diving) warning (150 × 150 mm)
1869 Sharks warning (150 × 150 mm)
1870 Sharp element warning (150 × 150 mm)
1871 Slippery surface (150 × 150 mm)
1872 Slipway (150 × 150 mm)
1873 Stepping hazard (150 × 150 mm)
1874 Strong currents (150 × 150 mm)
1875 Strong wind (150 × 150 mm)
1876 Submerged objects (150 × 150 mm)
1877 Sudden drop in swimming or leisure pools (150 × 150 mm)
1878 Sudden loud noise (150 × 150 mm)
1879 Surf craft area (150 × 150 mm)
1880 Swimming area (150 × 150 mm)
1881 Thin ice (150 × 150 mm)
1882 Towed water activity area (150 × 150 mm)
1883 Toxic Gas (150 × 150 mm)
1884 Toxic H2S gas (150 × 150 mm)
1885 Unprotected edges (150 × 150 mm)
1886 Unstable cliff (150 × 150 mm)
1887 Unstable cliff edge (150 × 150 mm)
1888 Vessels crossing (150 × 150 mm)
1889 Warning earth terminals (150 × 150 mm)
1890 Acetylene (150 × 200 mm)
1891 Acid (150 × 200 mm)
1892 Asbestos (150 × 200 mm)
1893 Battery acid (150 × 200 mm)
1894 Danger Overhead working (150 × 200 mm)
1895 Warning – beware tail rotor (150 × 200 mm)
1896 Danger Biological hazard (150 × 200 mm)
1897 Warning Boating area (150 × 200 mm)
1898 Caustic (150 × 200 mm)
1899 Chlorine (150 × 200 mm)
1900 Warning Cleaning chemicals (150 × 200 mm)
1901 Danger Compressed oxygen (150 × 200 mm)
1902 Danger Compressed gases (150 × 200 mm)
1903 Warning Corrosion risk (150 × 200 mm)
1904 Danger Corrosive substance (150 × 200 mm)
1905 Cyanide (150 × 200 mm)
1906 Danger (150 × 200 mm)
1907 Danger of death (150 × 200 mm)
1908 Dust hazard (150 × 200 mm)
1909 Warning Deep shelving beach (150 × 200 mm)
1910 Deep water (150 × 200 mm)
1911 Diving area (150 × 200 mm)
1912 Danger Electrical hazard (150 × 200 mm)
1913 DANGER Overhead working (150 × 200 mm)
1914 Caution Exhaust fumes (150 × 200 mm)
1915 Caution Explosive gases (150 × 200 mm)
1916 Danger Explosive material (150 × 200 mm)
1917 Caution Explosive risk (150 × 200 mm)
1918 Warning Falling objects (150 × 200 mm)
1919 Fire risk (150 × 200 mm)
1920 Danger Flammable atmosphere (150 × 200 mm)
1921 Danger Flammable liquid (150 × 200 mm)
1922 Caution Forklift truck in operation (150 × 200 mm)
1923 Warning Freezing condition (150 × 200 mm)
1924 Grounding of narrow boat on lock cill (150 × 200 mm)
1925 Grounding of cruiser on lock cill (150 × 200 mm)
1926 Warning Grounding on weir (150 × 200 mm)
1927 Warning Harmful chemicals (150 × 200 mm)
1928 Danger Harmful vapours (150 × 200 mm)
1929 Warning – hazards (150 × 200 mm)
1930 Warning Hazardous area (150 × 200 mm)
1931 Caution Hazardous substance (150 × 200 mm)
1932 Danger Hazardous substance (150 × 200 mm)
1933 Danger Highly flammable gases (150 × 200 mm)
1934 Danger Highly flammable material (150 × 200 mm)
1935 Danger Overhead working (150 × 200 mm)
1936 Warning – Hot (150 × 200 mm)
1937 Danger – Hot (150 × 200 mm)
1938 Hot Surface (150 × 200 mm)
1939 Warning Incoming tides (150 × 200 mm)
1940 Danger of infection (150 × 200 mm)
1941 Warning – inflatables (150 × 200 mm)
1942 Insulate before removing guards (150 × 200 mm)
1943 Danger Ionizing radiation (150 × 200 mm)
1944 Kite surfing (150 × 200 mm)
1945 Danger Flammable atmosphere (150 × 200 mm)
1946 Live wires (150 × 200 mm)
1947 Danger Low flash point (150 × 200 mm)
1948 Danger Low Oxygen (150 × 200 mm)
1949 Danger L.P.G. flammable (150 × 200 mm)
1950 Warning Low temperature (150 × 200 mm)
1951 Danger Men working below (150 × 200 mm)
1952 Caution Mind the step (150 × 200 mm)
1953 Warning Mind your head (150 × 200 mm)
1954 Motor starts and stops automatically (150 × 200 mm)
1955 Danger Moving machinery (150 × 200 mm)
1956 Noise (150 × 200 mm)
1957 Caution Non-ionizing radiation (150 × 200 mm)
1958 Open slowly (150 × 200 mm)
1959 Out of order (150 × 200 mm)
1960 Warning Overhead hazard (150 × 200 mm)
1961 Danger Overhead work (150 × 200 mm)
1962 Oxygen (150 × 200 mm)
1963 Parasailing (150 × 200 mm)
1964 Danger Petroleum vapour (150 × 200 mm)
1965 Danger Uneven surface (150 × 200 mm)
1966 Unmanned machinery space machinery may start without warning (150 × 200 mm)
1967 Warning Unprotected edges (150 × 200 mm)
1968 Warning Unstable cliff (150 × 200 mm)
1969 Danger – Vehicles (150 × 200 mm)
1970 Caution – Vehicles (150 × 200 mm)
1971 Caution Very hot water (150 × 200 mm)
1972 Warning Vessels crossing (150 × 200 mm)
1973 Danger Water skiing area (150 × 200 mm)
1974 Wet deck (150 × 200 mm)
1975 Caution You are entering a CO2 protected area (150 × 200 mm)
1976 110 volts (150 × 200 mm)
1977 115 volts (150 × 200 mm)
1978 220 volts (150 × 200 mm)
1979 240 volts (150 × 200 mm)
1980 440 volts (150 × 200 mm)
1981 380 volts (150 × 200 mm)
1982 3300 volts (150 × 200 mm)
1983 6600 volts (150 × 200 mm)

Need a size, wording or language that isn’t listed? Request a quote – Craftmark has made marine markers since 1959. See all marine & IMO safety signs.