Over a span of 20 minutes, as the vessel kept going further down into the water, all four were lifted to safety.
Chris Stoeckler, the helicopter's pilot, told KCAW, "The last basket hoist, the boat sank, and took the raft with it."
An investigation is underway to determine how the vessel got flooded in the first place.
Now that you're stressed out, take a moment to relax with these photos of beaches:
Coast Guard Beach
Coast Guard rescues fishermen moments before boat sinks
UNITED STATES - AUGUST 20: A statue of Duke Kahanamoku stands along Waikiki Beach in Honolulu, Hawaii, U.S., on Thursday, Aug. 20, 2009. Hawaii was admitted to the Union on Aug. 21, 1959, becoming the 50th U.S. state. (Photo by Kent Nishimura/Bloomberg via Getty Images)
** FOR IMMEDIATE RELEASE ** Miles of empty beach and billions of sea shells await a lone beachcomber at St. George Island State Park near Apalachicola in the Florida Panhandle on Feb. 5, 2007. Its called the Forgotten Coast because Floridas winter tourists tend to prefer the warmer beaches of south Florida, but for tourists from the far north, sunny days in the 50's and 60's can seem like spring, and without any crowds. (AP Photo/William Kronholm)
In this undated image released by O'ahu Visitors Bureau, a woman relaxes on Waimanalo Bay Beach Park in Oahu, Hawaii. Waimanalo Bay Beach Park is seventh on the 2012 list of Top 10 Beaches produced annually by coastal expert Stephen P. Leatherman, also known as "Dr. Beach," director of Florida International University's Laboratory for Coastal Research. (AP Photo/O'ahu Visitors Bureau)
Hamoa beach in Hana, Maui, Hawaii.
Bodie Island, North Carolina, United States, North America
FILE - In this Aug. 24, 2011 file photo, lifeguards keep watch over the beach along the Cape Hatteras National Seashore in Buxton, N.C. A report released Tuesday, May 20, 2014 by the Union of Concerned Scientists says that the Cape Hatteras Lighthouse is one of two dozen landmarks nationwide threatened by rising sea levels. (AP Photo/Gerry Broome, file)
The Cape Florida lighthouse is shown at sunset at Bill Baggs Cape Florida State Park, Monday, Aug. 20, 2012, in Key Biscayne, Fla. The original lighthouse was built in 1825 and was later attacked by Seminole Indians. It was rebuilt in 1855. (AP Photo/Lynne Sladky)
Florida, Key Biscayne, Bill Baggs Cape Florida State Park, Boaters Grill Looking Over No Name Harbor. (Photo by Jeffrey Greenberg/UIG via Getty Images)
EASTHAM - AUGUST 5: Lifeguard Seamus Roche on Coast Guard Beach. Visitors enjoy the activities at the Cape Cod National Seashore, a National Park on Cape Cod. (Photo by Bill Greene/The Boston Globe via Getty Images)
FILE- In this file photo provided the Charleston Area Convention & Visitors Bureau, people sit on a beach in Kiawah Island, S.C. Nearby Beachwalker Park on Kiawah Island is ninth on the 2012 list of Top 10 Beaches produced annually by coastal expert Stephen P. Leatherman, also known as "Dr. Beach," director of Florida International University's Laboratory for Coastal Research. (AP Photo/Charleston Area Convention & Visitors Bureau, File)
This undated photo provided by Visit Florida shows the beach at Delnor-Wiggins Pass State Park in Naples, Fla. The beach was named No. 10 on the 2014 list of best beaches in the U.S., an annual list compiled by Dr. Beach, aka Professor Stephen Leatherman of Florida International University. (AP Photo/Florida Park Service)