LightHouse charts dangerous objects
When using LightHouse™ charts or Legacy LightHouse™ vector charts objects deemed as dangerous are highlighted using a purple octagon symbol with an ‘x’ in the center.
Objects such as wrecks, that are in the Deep contour that are shallower than the depth specified in the Safety contour will be highlighted using the Danger symbol.
Height restrictions such as bridges, are always highlighted using the Danger symbol.
Note
When using Legacy LightHouse™ vector charts the display of Danger highlight symbols can be enabled and disabled from the Chart app’s Advanced menu tab: .