The Japanese coast guard on Friday rescued a British adventurer who hit a storm while rowing solo across the Pacific. Another Briton on a similar trek was still awaiting rescue.

Sarah Outen's blog said she was hit by a storm during her attempted journey around the world, and that her boat rolled over and was damaged.

On Friday, she tweeted: "Hooray 4 Japanese always being early!" That was followed by an announcement that she was safe on the rescue ship. The coast guard confirmed her rescue late Friday afternoon, and said she was walking on her own and appeared relatively healthy.

She had signaled for help on Thursday morning 900 kilometers (560 miles) off Japan's northeastern coast, saying there was a hole in her boat and that water was seeping in, according to the coast guard.

Another coast guard vessel was headed to rescue Charlie Martell, who had been on a separate solo trek when he got caught up in the same storm. His boat, Blossom, was 1,100 kilometers (680 miles) off the northeastern coast of Japan, the coast guard said.

Outen embarked on her planned 2 1/2-year journey in April 2011. She is trying to circle the globe using only human power, cycling, rowing and kayaking more than 32,000 kilometers (20,000 miles).

Martell said on his website that he planned to row "solo and unsupported" across the Pacific. The coast guard's ship was expected to reach Martell's boat Saturday.

Outen's boat was closer than Martell's, but she likely won't return to shore until Saturday, the coast guard said.