{{About|the Austro-Hungarian Navy rank|the equivalent rank in other naval forces|Frigate lieutenant}} {{Italic title}} {{unreferenced|date=December 2020}} {{Infobox military rank | name = ''Fregattenleutnant'' | native_name = {{lang|hu|Fregatthadnagy}} | image = KUK-Navy-Fregattenleutnant.svg | image_size = 50px | alt = | caption = Sleeve insignia | image2 = | image_size2 = | alt2 = | caption2 = | image3 = | image_size3 = | alt3 = | caption3 = | country = {{flag|Austria-Hungary}} | service branch = {{navy|Austria-Hungary}} | abbreviation = | rank insignia = | rank = | NATO rank = | Non-NATO rank = | formation = {{circa|1908}} | abolished = | rank group = | higher rank = ''Linienschiffsleutnant'' | lower rank = ''Korvettenleutnant'' | equivalents = ''Oberleutnant'' | history = }}

'''''Fregattenleutnant''''' ({{langx|hu|Fregatthadnagy}}; {{translation|Fregate lieutenant}}) was an officer rank in the Austro-Hungarian Navy. It was equivalent to Oberleutnant of the Austro-Hungarian Army, as well to Oberleutnant zur See of the Imperial German Navy. Pertaining to the modern day's NATO rank code it could be comparable to OF-1a (senior).

The rank of ''Fregattenleutnant'' was superior to Korvettenleutnant and inferior to Linienschiffsleutnant. Until 1908 the rank was called ''Linienschiffsfähnrich'' (ship-of-the-line ensign).

Professional officers skipped the rank ''Korvettenleutnant'' (OF-1b) and were directly promoted from Seefähnrich to Fregattenleutnant (comparable to Oberleutnant zur See).

The rank name was selected in line to the division of war ships to specific ship categories early of the 19th century, e.g. corvette ({{langx|de|Korvette}}), frigate ({{langx|de|Fregatte}}), and to ship of the line ({{langx|de|Linienschiff}}). In the Austro-Hungarian Navy the appropriate rank designations were derived as follows. *Korvettenkapitän OF-3 (equivalent: to Heer Major) *Fregattenkapitän OF-4 (equivalent: to Heer Oberstleutnant) *Linienschiffskapitän OF5; (equivalent: to deutsche Marine Kapitän zur See / Heer Oberst)

According to that systematic the rank designations to subaltern – or junior officers were derived as follows: *Korvettenleutnant OF-1b (equivalent to deutsche Marine Leutnant zur See Heer: Leutnant) * <span style="color:#007;">'''''Fregattenleutnant'''''</span> OF-1a (equivalent to deutsche Marine Oberleutnant zur See / Heer: Oberleutnant) *Linienschiffsleutnant OF-2 (equivalent to deutsche Marine Kapitänleutnant / Heer:Hauptmann) This sequence of ranks can be found in the today's Croatian naval forces.

{{sequence|noclear=true | prev = junior&nbsp;rank<br/>Seefähnrich<br/><span style="color:#007;">Korvettenleutnant</span> | list = 40px<br />(k.u.k. Kriegsmarine rank)<br/><span style="color:#007;">Fregattenleutnant</span> | next = senior&nbsp;rank<br/>Linienschiffsleutnant }}

== Other countries == The rank designation ''Fregattenleutnent'' was used continuously in naval forces of former Yugoslavia and as junior officer (OF-1a) rank in modern today's naval forces of Croatia, Slovenia and Serbia.

{| style="border:1px solid #8888aa; background-color:#f7f8ff; padding:5px; font-size:95%; margin: 0px 12px 12px 0px;" |- ! style="background:#CCCCCC" colspan=5| Rank insignia ''Fregattenleutnant'' |- style="background:#CCCCCC" !rowspan=2 | Country|| colspan=2| '''Croatia''' || '''Serbia''' || colspan=1|'''Slovenia''' |- style="text-align:center" | colspan=2 | 35px<br />Croatian Navy | 35px<br />River Flotilla | 35px<br />Slovenian Navy |- style="text-align:center" | style ="background:#CCCCCC;"| Shoulder<br />sleeve | 50px | 50px | 50px | 50px |- style="text-align:center" | style="background:#040040; color:white" |Native designation | style="background:#cfcfcf;" colspan=2 | Poručnik fregate | style="background:#cfcfcf;" | Поручник фрегатe | style="background:#cfcfcf;" | Poročnik fregate |- style="background:#dadada; text-align:center" |25px rank |colspan=2 |OF-1a ! OF-2 | OF-1a |}

==See also== * Ranks in the Austro-Hungarian Navy *Croatian military ranks *Military ranks of Serbia *Slovenian military ranks

== References == {{reflist}}

{{German military ranks}}

Category:Military ranks of Austria Category:Naval ranks