Dee ihe na-aga n'ihu maka paragraf a - Eduard Karl Emanuel von Jachmann (2 Machị 1822 <unk> 21 Ọktọba 1887) bụ "Vizeadmiral" mbụ (onye isi ndị agha mmiri) nke Prussian Navy. Ọ banyere n'ụgbọ mmiri n'afọ ndị 1840 mgbe ọ rụsịrị ọrụ na ụgbọ mmiri ahịa. N'afọ 1848, Jachmann natara iwu mbụ ya, nke a kpọrọ corvette; site na 1850s na mbido 1860s, o nwere ọtụtụ iwu ndị ọzọ, gụnyere frigates <unk>n'ụgbọ nke o sonyere na njem Eulenburg na East Asia <unk>na. N'oge Agha nke Abụọ nke Schleswig n'afọ 1864, o nyere ndị agha ụgbọ mmiri Prussia iwu na Baltic site na "Arcona", ma duru obere ndị agha na Agha nke Jasmund
N'ụbọchị iri na asaa nke ọnwa Mach. Ọ bụ ezie na e meriri ya n'agha ahụ, e buliri ya n'ọkwá "Konteradmiral" (onye na-esote onyeisi ụgbọ mmiri) n'ihi otú o si jiri ike ya mesoo ụgbọ mmiri ndị Prussia ihe.