Hmm - one look at this tramp steamer and I visualise Indiana Jones battling some villainous treasure hunter (and probably falling overboard)... but whatever 20th century through to near-future game you are playing, who knows when a no-questions-asked means of transportation across the seas (well out of sight of the authorities who tend to assume you'll travel as a regular passenger be it on an ocean liner or an aircraft) will come in handy.
And once there, who's to say that a brawl won't break out... the crew, pirates or Customs trying to board...?
So a fine top-down view of the decks of a classic tramp steamer, provided plain or with hex or square grid and in a vast single sheet or as several pages to stick together depending on your printing capabilities or online gaming needs... all ready for that brawl or whatever else you wish to happen during the voyage.
Two life-boats, a single funnel, the bridge, plenty of deck space on two levels... all crisp if less-than-perfectly clean, you can just about smell the oil and see the rust. A very atmospheric setting.