Another feature we agonized over was naval combat. This is a huge deal, and we've basically argued the matter to death. There were some significant naval battles in the rough period, but the only engagements of strategic importance during the entire era seems to have been the Battle of Meloria between Genoa and Pisa and the Battle of Sluys. On the other hand, many efforts to intercept raids and invasions failed miserably. Thus, naval combat in CKII, if ever added, would not be an all or nothing affair, but more akin to skirmishes with very limited casualties. It would still require a great deal of work to implement. End verdict: not worth it.
While I agree that adding Naval Combat to CK II would not be worth it (In part due to the nightmare of balancing historically strong Naval Regions that are represented by single provinces, and that Naval Battles should be rare but decisive), I would dispute that there were only two Naval engagements of Strategic Importance.
When you mention the Battle of Meloria (likely referring to the larger engagement in 1284), there also was an earlier battle of Meloria in 1241 that was fought between the Holy Roman Emperor Frederick II (With the aid of Pisa) against a Genoese fleet carrying church officials. The Genoese fleet lost 25 Galleys (3 Sunk, 22 Captured) and the Emperor no longer needed to worry much about Naval harassment during his War in Lombardy.
To use a few geographically Scottish examples, of which I am more familiar with:
1046, Battle of the Pentland Firth: Between Thorfinn and his nephew Rognvald, Earl of Orkney. Rognvald had at his disposal 30 ships, while Thorfinn had 60 (though Thorfinn's ships were considerably smaller). Also present was Kalf Arnason, who initially stayed neutral with his 6 larger ships, before joining with Thorfinn. From the Orkneyinga Saga:
Each of the Earls encouraged his men as the fighting grew fierce, but soon Thorfinn began to suffer heavy losses, mostly because the ships in the two fleets differed so much in size. He himself had a big ship. well fitted-out, and he used it vigorously in attack, but once his smaller ships had been put out of action, his own was flanked by the enemy and his crew placed in a dangerous situation, many of them being killed and others badly wounded...
Kalf attacked the smaller ships of Rognvald's fleet and it did not take him long to clear their decks, since his own stood so much higher. When the troops levied in Norway saw the ships next to them being put out of action, they loosed their ships from the ropes that had been holding them together and took to flight, leaving only a few in support of Rognvald's ship. That was the turning point of the battle.
1136, Battle of Tankerness (near Orkney): Rognvald (different from the one above) was granted Orkney by King Harald of Norway. The only problem is that the position of Earl was already filled by Paul. Olvir, one of Rognvald's allies, managed to gather a little more than a dozen ships from the Hebrides. Paul brought out his own ships to meet them (Once more from the Saga):
...twelve longships came sailing towards them east from Mull Head, so the earl and his men roped their ships together. Then the farmer Erling of Tankerness and his sons came to Earl Paul and offered to help, but the ships were so crowded, they thought they couldn't pack any more aboard. So the Earl asked Erling and his men to spend the time, while there was no risk, in collecting rocks for them. Just as everything was ready, Olvir's fleet came up and attacked them with a larger number of ships, though they were smaller ones. But Olvir himself commanded a large ship, which he sailed right up to the Earl's, and a fierce battle began. Olaf Hrolfsson moved his ship towards the smaller craft of Olvir, and his stood so much higher that it took little time to clear three ships. Olvir laid so hard against the Earl's ship that the men in the bows were forced back behind the mast and, urging his men to board the ship, he was the first man himself to do so.
[At this juncture, Olvir is knocked into the water] Then some of Olvir's men ran to cut the grappling ropes and get away, and every single one of them was driven off the Earl's ship. They started rowing away and, though Olvir came to and ordered them not to run, nobody took any notice of what he was saying. The Earl chased after them east of Mainland, then all the way beyond Ronaldsay into the Pentland Firth, but when the gap between them began to widen the Earl turned back. Five of Olvir's ships were left deserted at the place of battle and these the Earl took, putting his own crews aboard ...
1156, Battle of Epiphany: Somerled of Argyll defeated Godfrey of Man in a close battle, resulting in Godred ceding half of his Kingdom to Somerled. I'll quote the entry in the Chronicle of Man in full:
Hearing this, Godfrey was dismayed in his mind ; and immediately ordered his supporters to prepare ships, and go against them speedily. And Somerled with his followers collected a fleet of eighty ships, and hastened against Godfrey...
In the year 1156, a naval battle was fought between Godfrey and Somerled on the night of the Lord's Epiphany; and great slaughter took place, of men on either side. And when day dawned they made peace; and they divided the kingdom of
the islands between them, and the kingdom became bipartite from that day to the present time. And this was the cause of the downfall of the kingdom of the islands, from the time when the sons of Somerled took possession of it.
Certainly decisive, and one of many arguments for dividing Innse Gall into a minimum of two provinces (Inner and Outer Hebrides), but I digress . . .
1158, Battle of Man (think of it as the Battle of Epiphany part II), once more from the Chronicle of Man:
In the year 1158, Somerled came to Man with fifty-three ships, and fought a battle with Godfrey, and routed him; and wasted the whole island, and went away. And Godfrey sailed over to Norway, to seek help against Somerled.
c. 1480 Battle of Bloody Bay: Angus Og challenged his father John for the Lordship of the Isles. Angus Og emerged victorious, and John was exiled, dying as a pensioner of the Scottish King in 1503. Unfortunately we have no contemporary account of how many ships were involved, but we do know that nearly seventy years later in 1545 his son Donald Dubh was able to raise 180 Galleys from the Hebrides (and this was after having been imprisoned for some 37 years).
The battles listed above are merely the significant ones, smaller engagements in the Hebrides often went unrecorded. Nonetheless we have examples of smaller conflicts such as the battle off the Isle of Bute recorded in Grettis Saga, and my personal favourite (albeit by Orcadians in the Mediterranean) when Earl Rognvald Kali Kolsson of Orkney decides for the heck of it to attack an Islamic Dromond while he's off voyaging on his crusade (The best translation is found in Somerville & McDonald's
The Viking Age: A Reader, pages 217-221. Also take a gander at Clancy's
The Triumph Tree, pages 197-198.) From the sources we also get a tremendous idea of how useful having such fleets at your disposal were (Helped keep the Hebrideans fairly immune from the King of Scots until the advent of Gunpowder), how such a fleet could be used to inspire and incite (See
A Meeting of a Fleet Against the Castle of Suibhne, [
Dal Chablaigh ar Chaisteal Suibhne] c. 1310), and of course raiding (Such as Donald Balloch's raid on the Islands of the Clyde in 1452 with a force of 5000-6000 men in 100 Galleys).
I'll finish my rant with another quote from the Orkneyinga Saga:
In those days King Rognvald was the greatest warrior in the British Isles. For three years he had lived aboard his warships without once coming under a sooty roof.
This was a man who was so secure in his Kingdom that he could go raiding for three years straight, none of which would have been possible without his ships.
What I'm saying, in a roundabout way is that Naval Power was important, using only a single small area as an example. While I agree that the way the game is set up makes it difficult to portray this accurately, I'm hopeful that the upcoming Old Gods DLC will add some Naval events to help flesh out this important aspect. Lux Invicta had an event chain where your ruler could go off raiding with the inherent risks and rewards that it entails, and I'd love to see a more formalised system make an appearance in a future DLC. The main problem with event based representation is that it is prone to abuse by the player, but in the end I'd love to have more effort expand the role that Navies play in the game, even if it's more of an indirect manner.
(Also I posted the above with only having about half an hour's sleep last night, so I apologize if it's overly ranty/jumping around too much)
For anyone that may actually be interested in Hebridean Naval Warfare, and the literature that accompanies it, here are a handful of books to get you started:
Clancy, Thomas Owen.
The Triumph Tree: Scotland's Earliest Poetry AD 550 - 1350. Edinburgh: Canongate, 1998.
Duffy, Sean, ed.
The World of the Gallowglass: Kings, Warlords and Warriors in Ireland and Scotland, 1200-1600. Dublin: Four Courts, 2007.
MacAulay, John.
Birlinn: Longships of the Hebrides. Knapwell: White Horse, 1996.
McLeod, Wilson and Meg Bateman.
Duanaire na Scracaire - Songbook of the Pillagers: Anthology of Scotland's Gaelic Verse to 1600. Edinburgh: Birlinn, 2007.
Rixson, Denis.
The West Highland Galley. Edinburgh: Birlinn, 1998.
Somerville, Angus A. and R. Andrew McDonald ed.
The Viking Age: A Reader. Toronto: University of Toronto, 2010.
Young, G.V.C.
The Hebridean Birlinn, Nyvaig and Lymphad. Peel: Mansk Svenska, 1997.