Hakon Adelsteen Sommerfeldt

In 1826 he entered the Royal Norwegian Naval Academy (Sjøkrigsskolen) in Fredriksværn (now Stavern).

[2][3][4] He was a co-designer of USS Princeton (1843), along with Swedish engineer and inventor John Ericsson.

His other ship designs included the Nornen (1855), St. Olaf (1856) and Kong Sverre (1860).

He published several books on ships construction, including Om handelsskibes Construction (1845), Haandhog for practisk Skibsbyggeri (1855) and Lærebog i praktisk Skibsbyggeri (1856).

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