- Leader ability - Radio Orange
- Internal trade routes provide +1 loyalty to starting city
- International trade routes provide +1 culture to the Dutch city
This is a weak ability. +1 loyalty is too minor to matter in the vast majority of cases. The extra culture could be okay if you luck out and get some incoming trade routes very early on, but I don't think it is going to be very useful in any case.
- Civilization ability - Grote Riviereren.
- Rivers provide +2 adjacency to Industrial Zones, Theatre Squares, and Campuses
- Harbour district triggers culture bomb
This, on the other hand, is an excellent ability. The culture bomb is only very marginally useful, as the tiles surrounding Harbour districts will often either be useless deep ocean tiles or already owned tiles near the city center. The adjacency bonus, however, is awesome. Rivers run between tiles, and that extra +2 will more often than not come in addition to normal adjacency bonuses of +2 or more. In my last Netherlands game, I rarely saw any of these districts with less than +4 adjacency, and had some with +7. Combined with the appropriate policy card to double adjacency bonuses, this is huge.
- Unique unit - De Zeven Provinciën
- Replaces Frigate
- Ranged strength 60 (vs 55 for the Frigate)
- Melee strength 50 (vs 45 for the Frigate)
- +7 ranged strength vs defensible districts
I have somewhat mixed feelings about this one. On one hand, there is no doubt that it is a very good unit. It is a direct replacement to an already useful unit, and it is strictly better than it. These ships can take down city defences really quickly. The one reason I have mixed feelings about it, though, is that I am not sure how necessary it is. Frigates already bring down city defences very quickly, and the Zeven Provinciën doesn't really do anything for you which the Frigate doesn't already do well enough. If you compare it to the other Frigate replacement, the Jong, that ship is available sooner in the game, can get around more quickly, and can ferry other units. Still, I can't be too hard on the Zeven Provinciën. It is a good unit, strictly better than the one it replaces, and something you would have wanted to build in most cases anyway.
- Unique infrastructure - Polder
- Unique tile improvement
- Unlocks in the Medieval Era, at Guilds
- Must be built on a Coast or Lake tile adjacent to at least three land tiles
- +1 food
- +1 production
- +1 food per adjacent Polder (+2 at Replaceable Parts)
- +1 production per adjacent Polder at Replaceable Parts
- +4 gold at Civil Engineering
- Tile movement cost increased to 3
So, this is my favorite thing about the Dutch, mainly because it is fun to place these. In terms of usefulness, the Polder is pretty good. Yes, it arrives a bit late in the game, but it is a food/production/gold improvement, and the yields can get pretty impressive. It is also an improvement which makes otherwise weak tiles (I'm looking at lakes) very useful for the Dutch. A basic lake tile with a single Polder will yield +2 food +1 production +1 gold initially, +5 gold later. This is decent. However, lakes are often more than one tile large, and getting at least 1, sometimes 2 adjacent Polders is not uncommon. I'm a bit of a sucker for high yield tiles, so just for the fun of it, I present to you, the ultimate setup of Polder tiles: since Polders must be adjacent to 3 land tiles, the maximum adjacency you can get is 3 other Polders, and this will happen if you luck out and get a 4 tile lake. In this case, you will get 2 Polders with 3 adjacencies, 2 Polders with 2. To get the most out of your Polders, you will also want this lake to be within range of a city with a Lighthouse and a Seaport (as Seaports seem to apply their gold bonus to lakes as well). You will want to have built the Huey Teocalli wonder, and you want to be the suzerain of Auckland. This will give you, for each of those four lake tiles:
- 1(tile)+1(Polder)+1(Lighthouse)+1(Huey Teocalli)+6(Polder adjacency)=10 food
- 1(Polder)+2(Auckland)+1(Huey Teocalli)+3(Polder adjacency)=7 production
- 1(tile)+4(Polder)+2(Seaport)=7 gold
That is 2
24-yield tiles, in addition to 2
21-yield tiles, providing the city with 36 food, 26 production and 28 gold. Are there any better potential tile yields in the game? Perhaps if this lake could appear next to a natural wonder?
Overall, I really like the Dutch. They have the ability to get both some very strong district adjacencies, and some very good tile yields. They can make good use of terrain which others may find pretty useless. The Wiki claims that the Dutch are very weak in the early game, but I don't agree with that. Their excellenct adjacency bonus to important district types will make them pretty good from very early on. Polders will give them a nice ramp up of city yields in the mid to late game.
EDIT:
Disgustipated actually got really close to the ultimate Polder setup I was talking about. If you could have found a different location for Huey Teocalli, you could have put another 3 adjacency Polder in that lake, and each of the other 3 Polders would have gotten another adjacency for +2 food, +1 production. In any case, you should have shown the yields for the Polder in the middle, as that is the best one.

It will have 7 gold, 8 food and 6 production.