The next oldest of the steamship company's boats is the "Wilhelm Tham", named after the industrialist and CEO of Husqvarna Weapons Factory from 1876-1911.

Built at the Motala Werkstad as well, she was launched in 1912 and was one of three boats named to honour three of the area's living native sons. The other two were Victor Rydberg and Per Brahe.

She became part of the steamship company in the fusion with Ångbåts Aktiebolaget Jönköping-Stockholm in 1914, was extended and given her current profile in 1961 at the Falkenberg Shipyard.

One of the measures was to move her bridge forward under the mast, thus doubling the number of cabins. The steam engine was replaced by diesel in 1965.