Some different data about Dutch ships (and only data on what is different).
All data from the Dutch MoD website or the Dutch navy website, unless noted otherwise.
Most notable differences: you have the old A801 Pelikaan in your list and are missing HNLMS Van Kinsbergen, a training ship (the last 2 in my list).
You'll have to see for yourself what you want to do with it or if you want to do something with it at all.
(your data between the brackets)
Johan de Witt:
Displacement: 15,500t (16,160)
Dimensions: 176 x 29 x6 (176.6 x 26.4 x 5.1)
Aviation: 6 NH-90 or 6 Chinooks (6 NH-90 or 4 EH-101)
Well Deck: 4 -6 landing craft (2 LCU) (my note: AFAIK 4 LCU or 6 LCVP)
Armament: .50 mm (4 20mm)
Rotterdam:
Displacement: 12,750t (12,000)
Dimensions: 166 x 27 x 6 (160 x 25 x 5.9)
Propulsion: 2 diesels (4 diesels)
Crew: 130 (113-127)
Aviation: 6 NH-90 or 6 Chinooks (6 NH-90 or 4 EH-101) (my note: AFAIK the Chinooks are too heavy to operate from the Rotterdam)
Well Deck: 4 LCU or 4 LCVP (4 LCU or 6 LCVP) (my note: AFAIK you are right)
Troops: 604 (600)
Cargo: 32 tanks and 90 YPR and 1 Patriot battery (170 armored personnel carriers or 30 tanks)
Armament: .50 mm (4 20mm)
Walrus class:
Dimensions: 68 x 8.5 x 7.5 (67.73 x 8.4 x 7)
Crew: 50 (55)
Armament: my note: the Dutch only have Mk 48 torpedoes (20 Mk 48 or NT-37 torpedoes, mines, Harpoon SSM)
The boats will be getting an overhaul in 2011-2018 (These boats will be given a midlife overhaul starting circa 2009/2010.)
Zeven Provinciën class:
Displacement: 6,050t (6,044)
Dimensions: 144 x 17 x 7 (144.2 x 17.2 x 5.2)
Armament: Mk 46 torpedo (4 12.75 inch torpedo tubes)
M-class (or Karel Doorman class, but M-class is the official name in Dutch):
Displacement: 3,300t (3,320)
Dimensions: 122 x 14.4 x 6.2 (122.25 x 14.37 x 6.05)
Aviation: my note: the Dutch and Belgian M's will be converted to handle the NH-90, one Belgian M has already been converted. They can carry 2 Lynx and I thought also 2 NH-90s in the (converted) hangar, but usually have only 1. (1 Sea Lynx helicopter)
Armament: Mk 46 torpedo (4 12.75 inch torpedo tubes)
Holland Class:
2010-2013 (2009-2012)
Holland
Zeeland
Friesland
Groningen
Tripartite class:
Displacement: 543t (595)
Dimensions: 51.5 x 8.9 x 3.8 (51.6 x 9 x 3.5)
Propulsion: 13 knots (15 knots)
Crew: 33-38 (55)
Sonar: 2 PAP 104 MNV or 26 Seafox (DUBM 21B minehunting, 2 PAP-104 ROV)
Armament: 3 x .50 (1 20 mm, 2 12.7 mm)
JSS (JLOS) (source: article written by someone in the Defence MAterial Organization for the Foundation of Navy Officers):
Troops: 125 (-)
2x LCVP, but no well deck. (-)
negotiating with Damen Schelde at the moment (ordered)
Improved Poolster class:
Displacement: 16,900t (17,357)
Crew: 190 (173)
Aviation: 2 Lynx (3 Sea Lynx)
Armament: 2x .50 mm (5 20mm)
Amsterdam:
Displacement: 17,040t (17,050)
Dimensions: 166 x 22 x 8(175 x 23.7 x 8)
Crew: 160(161)
Aviation: 4 Lynx or 3 NH-90 (2 helicopters)
Cargo: 6,700 dieselfuel, 1,660 aviation fuel, 500 cargo = 8860 (10,300 tons)
Armament: 2x .50 mm (2 20mm)
Snellius class:
Displacement: 1,875t (1,800)
Dimensions: 75.0 x 13.1 x 4.0 (75 x 12.8 x 4)
Propulsion: 12 knots (-)
Crew: 18 (12 + 30 mission crew)
Mercuur:
Displacement: 1,400t (1,500)
Dimensions: 64.8 x 12 x 4.3 (-, only in feet)
Propulsion: 2 MAN 6L-20/27 diesels (Diesel-electric)
Crew: 18 (12 + 30 mission crew)
Armament: 1 underwater torpedotube for Mk 48 (2 12.7 mm MG, 2 21 inch torpedo tubes, 1 triple 12.75 inch TT)
Pelikaan
Displacement: 1,100t (710)
Dimensions: 65.4 x 13.2 x 4 (-, only in feet)
Propulsion: 2 x Caterpillar 3516 BTA diesels, 14.5 knots (2 diesels, 10 knots)
Crew: 13 (15)
Troops: 64 (49)
Armament: - (2 12.7 mm MG)
Newly built (Converted oil rig support tug)
Year: 2006 (1984/90)
Van Kinsbergen Training Ship (sources: Navy Inside and MoD)
Displacement: 600t (-)
Dimensions: 41.5 x 9.2 x 3.3 (-)
Propulsion: 2 diesels, 2 shafts and an electric bow thruster, 12.8 knots (-)
Crew: 5 students, 5 teachers (-)
A902 Van Kinsbergen 1999
And all Dutch ships have their homeport in Den Helder, except Pelikaan, which is stationed in the Netherlands Antilles permanently.