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How to Search in TRIREME

The contents of this digital archive are organized hierarchically from largest to smallest–Institution, collection, box, folder and down to individual items or files.

Once in an institution’s collection (U.S Naval Academy, U.S. Naval War College, or Naval Postgraduate School) the icons will indicate what level you are looking at:

 represents a large container, usually a Collection. A Collection may include multiple smaller collections or it may be a single Collection which includes folders and individual items.

icon2 represents a Record, which refers to a Folder. Folders contain individual items, files, or file types. Sometimes the Folder icon represents an entire collection other times is might just be a folder within a very large collection.

Item Icon

represents an individual File, specifically a document or photograph file.


Other icons will appear for audio or video files. 

It should be noted that the above descriptions are generalizations.


The U.S. Navy Higher Education Digital Preservation System provides two main ways to access our collections and records:




By browsing the archive, a researcher is able to see current holdings for each institution. The browse feature enables users to drill down into collections to see what items are in each each collection.  

To browse, use the “browse archive” button:  

Search_Tips_Browse Page_Browse Archives


Once on the “browse archive” page you will have a choice of searching the collections of the Naval Postgraduate School, the U.S. Naval War College or the United States Naval Academy–each collection is represented by a Tile. Click on the collection you wish to view. Make sure to click on the image, not  the “details” link below to enter the collection.



Once you have a chosen an institution, the next screen will offer you a choice of collections.

In this example, you are offered a choice of the U.S. Naval War College’s top level collections, “Institutional Repository,” “Naval Historical Collection,” or “College Archives.” Click on “details” to learn more about which materials are within the collection. Click on the icon to enter the collection. 


Click on the chosen collection, in this example, “College Archives.” 

The next level down will be a Record Group, which includes the records/files of a Naval War College department or program, then a Box, Folder, and item. At any time you can search the collection you are in or return to search the entire TRIREME archive. 



When using the browse feature, always click on the icon or image to get to the file.  

How to Browse Folder Icon


To open the items in the container, click on the icons. If the container only has 1 item, it will only open 1 item no matter what icon is present. 

To get to an individual item, such as a document or photograph, click on the folder, then click on the image. You may have to click through multiple  times to get to an individual item. 

NOTE: Clicking on “details” will bring you to a page with metadata about that collection, folder or item. Scroll down for information on METADATA.

 To return to the main search page, click the “HOME” or “Root” breadcrumb.






The “Search Archive” option allows you to simultaneously search across the collections of the three institution’s holdings.


To conduct a simple search, type in your search term in the “Search Archive” box across the top of the Trireme web page:


If you are already within a specific Collection, Sub-Collection, Series, Or Record level, simply type your search term in the “Search Archive” box, and it will search within that specific collection or series:

Search Tips_Browse Page_Selecting Collection USNWC


AND/OR/NOT:  Boolean searching

Keywords may be combined using Boolean operators. The most commonly used Boolean operators are AND, OR, and NOT (sometimes also seen as AND NOT). The use of these operators between keywords controls the way the search terms are combined and instructs the computer to search for keywords in a particular combination.


  1. Query:  I’m looking for a document about leadership in the Navy i.e. The document must contain the word leadership and the word navy   Search: Leadership AND Navy
  2. Query: I’m looking for a thesis about leadership or Naval officers.    i.e. The thesis must contain the word leadership or the term Naval officers.   Search: Leadership OR Naval Officers
  3. Query: I’m looking for documents on leadership but am not interested in anything pertaining to the Army.    i.e. The article must have the word leadership but must not contain the word Army.   Search: Leadership NOT Army


Exact Phrase: Using quotations

In general, phrases of two or more words are placed in quotation marks (“ ”).


  • “Student Theses”
  • “Naval Leadership”
  • “Naval War College”

Using  quotation marks will return results that have the exact phrase in the metadata.


Wildcard search: Using question marks or asterisks

In most cases, the truncation sign is an asterisk (*). However, in some cases the truncation sign is an exclamation point (!) or a question mark (?). If a keyword is truncated, the computer searches for the root of that keyword with all variant endings.

Examples:  nav*  finds:  navy, navy’s, navies, and naval (as well as navigation)

 comput*  finds:  compute, computer, computers, computational, computing  and computerization




Regardless of how the collection materials are accessed, whether it be browsing or searching, all search results can be refined through the use of “facets.” Facet options will always appear on the left side of the search results page. Facet options will have a check-box, the facet name, and the number of results applicable to that option:


Clicking on a facet will revise the results to items that match the search criteria, and the page will update the numbers next to facet options to show how many records still apply.  Please note, facet options that no longer apply are not automatically removed from the list; to update the list to show only those options that still apply, the page needs to be refreshed.


The “Advanced search” will appear after an initial search has been started. 



Click on “Advanced Search” and a “Create Filter” menu will appear.

If you click on the down arrow you will see which filters you can add. In the example the options are “Creator,” “Date,” and “Subject.” You can refine the search by adding filters one at a time.


To create an “advanced search”

  • Choose a filter, i.e. “Creator” and
  • Enter the term you wish the search to match, i.e. Creator matches “Jones”
  • Click the “Add” button
  • You can choose any or all of the Advanced Search filters, but must add them one at a time
  • Advanced Search filters and facets can be used together to refine a search.



If working within a specific collection, clicking on the “Details” link under the icons for each institution will provide you with materials included in each collection:


Once you are within a specific collection, you have the option to click on the material types– collections, records, etc.– located on the left side of the web page:


The information about the collection including creator, title, extent, format, and a description of the collection–at collection level–and the item (if an item level description is included) appears on the left hand side of the screen. 

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