Same to you, fella.
In some cases, like this, it wouldn't ring true without the foul language. I used to be a sailor, remember, the average genteel discourse in most Hollywood naval dramas sounds about as realistic to me as bikers talking in iambic pentameter.
It sounds like they've made an effort with this show to get it archaeologically correct. I wonder what foul language of the late 1800s
is still current today, how much has just gone by the wayside, how many of our obscenities they were familiar with. One advantage our age has for future historians is that they will know what our cursing sounded that.