This is the S/V Albanus from Åland. She's a classic example of the Baltic Gaff rig.
As you can see the angle between the gaff (The upper of the two booms that carry the sail) and the boom isn't all that large. You'll also note the complete lack of reefing lines in the main sail and the gaff sheets. (I'm pretty sure that isn't the correct name, but it describes the function)
Here she is with her sails furled. As you can see her gaffs stays up there.
Like all things in life this particular rig has its advantages and disadvantages. The most obvious advantage is that the sails can be set with small crew and it can be done faster than other gaff rigs. Unfortunately it also means she can't reef her sails or strike down the topmast.
Compare it to the Jens Krogh, a classic North Sea or Atlantic Gaff rig.
Unlike the Albanus she strikes everything down on deck and her sails can be reefed, a lot. This means she can handle much rougher weather, but it also means that she requires more crew, and setting and taking the gaff sails takes longer and is in general a more involved affair.
However, since your ship is a naval vessel, crew isn't going to be a problem, but staying on station in shitty weather is.
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