Knot 10 Yacht Sales added Randy Walterhoefer to the brokerage.
Monthly reports on sales of brokerage boats help the industry understand the sizes and types of used vessels that consumers are buying and how long it takes to sell them.
Brokerage boat sales declined 5 percent in August as 2,862 boats changed hands, compared with 3,027 in the same month last year.
Yacht-selling website Yatco expanded its sales and marketing teams with two new regional sales managers and three additional marketing personnel.
Sales of brokerage boats declined in July with volume off 8 percent and the total value of boats sold off 1 percent compared with the same month a year earlier.
The Hampton Yacht Group, a new- and brokerage-boat sale group with offices in Seattle; Newport Beach, Calif.; and Shanghai and Sanya, China, is getting results from its video tours posted on YouTube.
The number of brokerage boats sold in the United States in June was down 2 percent below the total for the same month last year.
U.S. brokerage sales fell in May, but volume for the month was the second-highest for a single month of sales since 2008.
The cold winter of 2014 continued to affect U.S. brokerages as sales declined 8 percent in March to 2,439 boats from 2,642 in March 2013.
U.S. brokerage sales fell in February as 1,607 boats changed hands, 7 percent fewer than in the same month a year earlier, when 1,729 were sold.
Maryland-based Knot 10 Yacht Sales opened an office at Loggerhead Marina in Hollywood, Fla.