Also known as "Storm Signals", the 3'x3' flag is displayed when hurricane force winds are expected. The 3'x6' Pennant is displayed when Gale force winds are expected. These flags are available individually or as a set (one of each flag).Our Marine/Nautical flags are crafted from durable nylon material. Each flag has extra stitching for a long-lasting flag in harsh marine use. The flag and pennant each have 2 brass grommets used for hanging. Custom yacht flags/pennants also available please contact us.