Lieutenant admiral is a senior naval military rank in some countries of the world. The rank is considered by many nations to be a direct equivalent of a vice admiral.
In the Royal Netherlands Navy the rank of lieutenant admiral (Dutch: luitenant-admiraal) is senior to vice admiral (Dutch: vice-admiraal) and equivalent to admiral in most other navies. The rank of admiral is reserved for a prince of the house of Oranje-Nassau or the king.
During the seventeenth century, Michiel de Ruyter and Cornelis Tromp, had the rank of lieutenant admiral general (Dutch: luitenant-admiraal-generaal) to distinguish them from other naval officers with the rank lieutenant admiral.
The Swedish word for Lieutenant admiral is: amiralitetslöjtnant.
References
Lieutenant admiral Wikipedia(Text) CC BY-SA