I found this passage from Two Years Before the Mast interesting for several reasons (emphasis mine):
Before I end my explanations, it may be well to define a day’s work, and to correct a mistake prevalent among landsmen about a sailor’s life. Nothing is more common than to hear people say, “Are not sailors very idle at sea? What can they find to do?” This is a natural mistake, and, being frequently made, is one which every sailor feels interested in having corrected. In the first place, then, the discipline of the ship requires every man to be at work upon something when he is on deck, except at night and on Sundays. At all other times you will never see a man, on board a well-ordered vessel, standing idle on deck, sitting down, or leaning over the side. It is the officers’ duty to keep every one at work, even if there is nothing to be done but to scrape the rust from the chain cables. In no state prison are the convicts more regularly set to work, and more closely watched. No conversation is allowed among the crew at their duty, and though they frequently do talk when aloft, or when near one another, yet they stop when an officer is nigh.
…This is the usual resource upon a rainy day, for then it will not do to work upon rigging; and when it is pouring down in floods, instead of letting the sailors stand about in sheltered places, and talk, and keep themselves comfortable, they are separated to different parts of the ship and kept at work picking oakum. I have seen oakum stuff placed about in different parts of the ship, so that the sailors might not be idle in the snatches between the frequent squalls upon crossing the equator. Some officers have been so driven to find work for the crew in a ship ready for sea, that they have set them to pounding the anchors (often done) and scraping the chain cables.
In the full passage, Dana explains that there is more than enough necessary work aboard ship to keep the crew continually busy. But he implies here and elsewhere (and may at some point come out and say it explicitly) that the continuous employment at all times is a means of maintaining discipline and order among the crew. When every waking moment is taken up with some task (necessary or make-work), there is little opportunity or energy left for the kind of talk or actions that could lead to conflict or disobedience.
Which, when you think about it, is a lot like modern life: work, commuting, childrens’ enrichment activities, the DMV, tax prep, home maintenance, car maintenance, doctor or dentist appointments, walking the dog, bathing the cat, etc. And what time is not consumed in these tasks (some of which are the consequences of personal choices, and some of which seem consciously structured to maximize the waste of your time), omnipresent distractions like sportsball, addictive social media, banal entertainment, controversy-stoking “news”, shifting trends, etc. are there to absorb.
I can easily imagine this shipboard practice being implemented on ships traveling between Earth/Luna and Mars – and at least in the early days, in settlements themselves – for exactly the reasons thus far implied by Dana.
