This page contains spoilers about the Heartbound ARG. If you want to solve the puzzle yourself, avoid reading this article.
The Artifact
Hard To Starboard was found by solving Second Breakfast, which led to the page https://www.gopiratesoftware.com/games/Heartbound/OSCAR/OCTOTHORPE/LETTUCESQUARES/. The page shows the The Artifact's eyes, as despicted on the right picture. The source code of the page has the following:
The source of the page reads:
<!-- I do... -->
<!-- You're going to be ok. -->
<!-- You have us. -->
<!-- You have this place. -->
<!-- You're wrong. -->
<!-- You just keep telling me the same thing. -->
<!-- Exactly what I want to hear. -->
<div class="Hard to starboard!">
<!-- Mind the table. -->
<!-- Don't fall off. -->
<!-- 3050UBF40U9E40U -->
<!-- BA40UD440U6F40U -->
<!-- 8340U9D40U4C40U -->
<!-- 3740U1940UC840U -->
</div>
Decoding the data[]
We have here some clues followed by some alphanumeric data. Starboard means the right side of a boat, which suggests that we should rotate the data we have in the clue. But the "Hard to starboard" command actually means to turn the boat to the left, because a boat's tiller need to be moved to right so the ship itself turn to left (and the other way around).
However in the end of the day it doesn't really matter which direction we rotate the data, since what we need to do is a 180 degrees rotation (because this is the only way of rotating that doesn't change the length and weight of the data). In order to rotate the data, we can use rotate tool on Rumkin, which gives us:
U048CU04910473 U04C4U04D90438 U04F6U044D04AB U04E9U04FB0503
The next clue to solve the data is to "not fall off the table". In our context, "table" refers to "Unicode Table", which is further reinforced by the U's in our data, as Unicode characters usually are represented by "U+" followed by the hexadecimal number of the character (which is the "code point" of the character, if you want to use the proper technical term). So what we have in our data is this:
U+048C U+0491 U+0473 U+04C4 U+04D9 U+0438 U+04F6 U+044D U+04AB U+04E9 U+04FB U+0503
If we convert those code points to their respective characters, by using the Unicode Table, we get ҌґѳӄәиӶэҫөӻԃ . This is the solution we are looking for, it reads "Broken Record" but written in a distorted way. The solution has to be added to the URL exactly as it is written (with those weird characters): https://www.gopiratesoftware.com/games/Heartbound/OSCAR/OCTOTHORPE/LETTUCESQUARES/ҌґѳӄәиӶэҫөӻԃ/
This leads us to the next step of the ARG: Tick And Tock.