Monthly Archives: April 2023

Advanced Searching in ShipIndex.org

Our “Introduction to Searching ShipIndex.org” Research Help Guide provides an overview of the basic parts of searching ShipIndex.org. There are some advanced features, as well, and they’re worth knowing about.

It seems straightforward – type in a ship name, get results. Actually, there’s a whole lot more that you can do in the database, and it is, admittedly, kinda wonky and a bit tricky. Please watch the following video to better understand how to use the search features more effectively.

Here’s an overview of the most important points:

  • Remember that your search only brings back that ship name. There’s lots more after you click on the “See other matching ships” button.
  • To limit a search to just the ship name field, use the term “@ship_name” and then the name of the ship. For example, “@ship_name union“.
  • To search for a ship name that starts or ends with a specific word, use these characters: use “^” (the carat character) in front of a word, to indicate that the ship name must start with that word; or “$” (dollar sign) at the end of the word, to indicate the ship name must end with that word. For example:
    • @ship_name ^union” to display ships whose name starts with “union” – Sample search
    • @ship_name castle$” to display ships whose name ends with “castle” – Sample search
  • Use “*” (asterisk) to expand a search, but you must start with at least two characters.
    • A search for “acht*” returns ships where a word that starts with “acht” appears in the ship name or the citation. In this case, it includes “Acht Gebroeders”, “Achtienhoven”, “Martini Achter”, and “Y’acht Tu Put Family First”. Sample search. It does not look for “acht” within a word; it only looks for words that start with “acht”. (The apostrophe in “Y’acht” appears to create a new word; note that no entries with the full word “Yacht” appear in this search.)
    • If you search for “@ship_name *acht” you’ll get lots of citations for ships with names like “Deltagracht”, “Dotte Yacht”, and more. – Sample search.
    • And, if you put an asterisk before and after “acht”, you’ll get a combination of both searches from above, plus ship names where “acht” just appears within a word, as in “A Lil Naughty Yachty”. – Sample search.
  • You can even exclude specific words from ship names by putting a “!” (exclamation point) in front of the terms you want ignored. A search with the phrase “@ship_name ^mary !annie” will return all entries where the ship name starts with “mary” except for those that also have “annie” in the name. – Sample search

The full help page will give you more guidance as well. But it’s clear that there’s a lot you can do when searching the database.

An important concept here is that the ShipIndex.org database serves as a de facto authority file for vessels. There’s no larger collection of vessel names out there, and if you’re having a hard time finding information about a ship with the name you have, you might do some searching to see if there’s a different version of it. At a genealogy conference in England, a person came to me seeking information about a ship named “maid of sussex”. We found no ship with that name. Now, it might have still existed, but the ShipIndex.org database is pretty comprehensive at this point. By playing with the database, and searching for just “sussex”, for instance, then clicking on “See other matching ships”, we found “Sussex Maid,” which was, most likely, the ship she was seeking.

There are many ways of using and searching the ShipIndex.org database, even if you’re not subscribing. Give it a try, and let me know if you have questions or comments.

Introduction to Searching ShipIndex.org

The video below shows effective ways of using the ShipIndex.org database. It’s good to know what the database can, and cannot, do.

Here’s an overview: ShipIndex.org tells you what books, journals, websites, databases, resources, and more, mention the ships you want to learn more about.

There are, basically, two versions of the database: the free database and the subscription database. You’ll find over 150,00 citations, and lots of great content, from many significant books in maritime history, in the free database. You’ll also find links to subject headings in WorldCat, though have significantly declined in value, due to a change by OCLC, WorldCat’s owner, this past month. Read more about that here.

The subscription database has over 3.2 million citations in it, and it’s always growing. The subscription database contains lots more online content than the free database, plus many, many new books in maritime history. All content that’s been added since 2009 has gone into the subscription database, except for updates to the WorldCat file.

Watch this video to learn more about the specifics of searching the database, and a bit more about what you can expect:

Subscribing to the database is inexpensive and easy — you can subscribe for a set period of time, from two weeks to a year, or you can subscribe on a monthly basis, in which the subscription will continue until you cancel.

You might also find that an academic or public library near you subscribes to the database. If you’d like to suggest that your local public or academic library consider a subscription to ShipIndex, please take a moment to tell them about the database! We can set up a trial for them, and if they let patrons access resources during a trial, you could use it then. Ask your librarian to contact us about options for subscribing!

We believe strongly in the importance of maritime museums, so we offer free access to the full database for all full members of the Council of American Maritime Museums (CAMM). A museum staffperson can contact us to get access set up on their campus and in their buildings. If they so choose, they can offer this access to museum visitors, as well, such as in their library or through their wifi network.

Basic advanced searching

When you search for a ship name, you’ll often see the following phrase at the top of a results page: “See other matching ships”.

This means that, in this case, you’re looking at ships whose full name is “Eagle”, excluding any prefixes like “HMS”, “USS”, or of course, “USCGC”.

When you click on the “See other matching ships” link, which is in the red box shown above, you get this result:

Each ship name here either contains the word “Eagle” in the name, or somewhere in the citation. With a common one-word name like “Eagle”, this can be overwhelming. The next step is to narrow down the search, by using this search term: “@ship_name eagle“, to get this result:

Now every citation has the word “Eagle” in it, which definitely narrows down results. But there’s more that can be done to get to better results. See our video on advanced searching, to learn more.

WorldCat (April) Fools

This is the first of a few new blog posts. It’s April 1, April Fools Day, but there is, alas, no foolin’ around here. It’s just bad news, start to finish, with the WorldCat subject entity links that have been in the free ShipIndex database since 2009. Read on, to learn more.

When ShipIndex switched from a personal project to a real company, back in 2009, I put all of the citations that had been in the “project” database, into the free database. Anything new was going to go in to the subscription database. I had been in contact with researchers at OCLC, the very large library cooperative that ostensibly helps libraries manage their resources, and shares those holdings, via their publicly available database called WorldCat. I worked with several remarkable people there, who through the years generated a list of all of the “identities” for ships in WorldCat.

This meant we could find books or manuscripts that were by or about ships. So, a book about a ship is easy enough to imagine – the book The Royal Yacht Britannia: The Official History is clearly about that vessel. Having a specific subject heading about that specific yacht makes it easier to differentiate between vessels with the same name. It also created links to books by ships, which often meant logbooks our individually-kept personal journals by people who were on board a vessel. It was a great way of uncovering a lot of useful content about ships that wouldn’t be found otherwise.

But the folks at OCLC said this content needed to be in the free database, not in the then-nascent subscription database. That was fine with me; it was worth including that content and keeping it freely available. The file has been updated occasionally over the past few years, and has always been in the completely free database.

Two or three weeks ago, I was doing some searching, and looked at WorldCat records. I saw notices indicating that the OCLC Identities project, on which these links were based, was going away. This past week, all the links to WorldCat failed. OCLC has ended this project, and with it, links to lots of content that used to be in the database. They’ve also removed linking by Library of Congress Control Number. You’re just searching by phrase now – this seems like the total antithesis of the ideals behind Linked Data.

I have figured out a way to make these links mostly work. The links are now searching by subject headings, rather than by control numbers or identities. As a result, in many cases, they won’t work effectively. In the old file, there was a search to an identity for a ship named “104”, and it specifically went to the entry for a specific ship with that name. Now, the search is for any entry that has both terms “104” and “ship” in a subject heading, so instead of one or two specific results, you get 38 results. Some refer to ‘cruise 104’ of a different vessel. It’s really too bad. Searches for ships like “Mary” are going to terrible, because they’ll include ships named “Mary Rose”, “Mary Ellen”, “Mary & Frank”, “Mary Smith”, and any other ship that has ‘mary’ as just part of its name – instead of going directly to the ship you’re researching. A search for a single, common word ship name, like “Eagle” or “Union” or “James” or “Monitor” or “Wasp” is going to return any record that has that word anywhere in the list of subject headings, even if the term doesn’t have anything to do with a ship name. Connections we’ve made, between specific vessels represented in WorldCat and other citations for those specific vessels, are probably no longer relevant.

OCLC did some work in creating Virtual International Authority File (VIAF) records for some ships, as well. Again, this was great in differentiating between ships with different names. But as far as I can tell, that is also all wiped out.

I’m disappointed and frustrated by this change, as I am with most of what OCLC has done to WorldCat over the past few years.

I’ll leave with this image I collected from WorldCat a few weeks ago, telling me that a copy of a book I wanted was at the State Library of South Australia, but that library is further than the distance to the moon:

My frustration with WorldCat – and OCLC – is ancient news, but it does just keep getting worse. This is really unfortunate. This is NOT a good April Fools joke.