Considering it didn't add more 'features', it certainly felt different from the main game.
Graphics: 8 (the boat looks fantastic as well as the water effects / the land however not so)
Sounds: 7 (nothing changed here however still acceptable)
Value: 8 ($4 for around five hours of gameplay is pretty good value / each missions save the last are actually quite good)
Tilt: 6 (considering the last mission is broken, 5 / 6 missions are not too bad)
Actual score: 6.7
I would like to get one thing of my chest – I dislike broken missions. Yes, the ones that you spent hours on just to realise that you cannot complete it without jumping through flaming hoops whilst ensuring that your ice cream does not melt at the same time. What's this got to do with the first Ship Simulator DLC title 'Fishing Trawler – Sigita'? Well the last mission is exactly just that – if you do the slightest 'mistake' (hence it's not a 'mistake' however more like 'breaking the script'), you will be left with an uncompleted mission after 1hr of real time sailing.
Before I go on about that, this DLC is the first one for Ship Simulator Extreme (SSE). You get to sail the Sigita – a fishing trawler and a new boat that wasn't there in SSE. I wasn't exactly sure how one can make a DLC basing on a trawler catching fish. Seriously, it's not my ideal form of video gaming however once completed it, all the missions have nothing to do with catching fish, save for the last broken mission (ironically so).
So the adventure you'll experience is pretty much what you have already done when playing the 'core' campaign in SSE – that is towing, mooring and the like. However there are some missions that are actually quite entertaining. Some examples are towing a fellow trawler away from colliding to an oil rig / controlling two trawlers at the same time (yet the starting points for both boats are miles apart).
Also there are features that the main campaign didn't utilise enough. The immediate one is that the seas are quite choppy – not too intense however noticeable enough. This naturally produced nice effects and if you sail via cockpit view, you can really feel the sway (I hope you're not sea sick). Another feature was the weather changes during the mission. I quite like that as it brings immersion. I remember in one mission where the skies darken however didn't rain, only to clear up to darken again, then poured down like there's no tomorrow.
Keeping the tradition of exploring the interiors, you get to explore the Sigita and I have to admit, it's a lovely boat inside with all that mahogany wood (I hope it is) and the like. There are also three viewpoints being the port, starboard and the crow's nest. I like the crow's nest view the best (for obvious reasons).
To finish this game, you need to complete six missions; and thankfully they all do feel different (save the obvious sailing). However, as mentioned before, the final one (and the longest one too) is broken to kingdom come. Yet, if you look at it as completing five missions, it's still not too bad as it may take five plus hours of sailing fun. In retrospective, I quite like it considering as even though it didn't add more 'features', it certainly felt different from the main game.
One last thing: Sydney hasn't snowed for close to one hundred years...