A map is not all that necessary in this case. Think of a ship, with one mast and a raised back section for the captain's quarters. Then imagine that there are two floating box-boats towards each end on each side. There are ropes and hooks going from the box-boats to the deck. As far as the battle goes, think in quadrants, corresponding to a quarter of the ship and a box-boat. One quadrant seems to be under control, as Rysian is holding off the drow, who don't have sniper cover anymore. Each of the other three has one fighter at it (H-Orcs and Akharos). Ubaar and Calain are casting spells form the center, Alcar is in an unspecified quadrant, and Frian, and Alex can enter appropriate quadrants as needed, .
Calain secures his position, using his boots to speed his spellcasting (haste), causing his skin to darken somewhat, its surface hardening and becoming like living stone (stoneskin), putting himself in a minor globe of invulnerability and summoning dark tentacles from the deck of the ship to grab drow when they crest.
Each boxboat (besides the one that Rysian is covering) has two snipers covering the advance and four drow climbing up. There are trap doors on the top of each of the box-boats, and from each emerges a mage. Alcar immediately summons his spiritual Maul to harry the mage in his quadrant, and prepares to fire his bow. the Maul smashes into the mage's head, disrupting his spell (17 dmg crit).
Ubaar summons the power of the thunderbeast, stomping on the ship and sending ripples through the water and shock waves through the air. On Alcar's side, they knock down the snipers. He cannot strike the other side without hitting his comrades guarding it. Alcar shoots the mage twice and kills him.
The other three get their spells off. Each blasts a pea-sized goat of fire at the ship which explodes into a brilliant sphere of flame, blasting the fighters guarding the ship's edge, damaging the ship, and destroying the ship's rim used for cover.
Rysian's arrow pierces the mage in his quadrant and knocks him back into the boxboat. (PC DMG: Elone 15, Ahharos 16, Ubaar 16, Frian 8, everyone else avoided dmg). The three remaining on top of the boxboat drow are climbing towards Rysian.
In the two quadrants with both snipers standing and fireballs successful (Akharos' and the H-Orc one that Alcar was not at.), The snipers shoot at the fighters, who are now without cover, while the other four drow climbers stream onto the deck.
One of the H-orcs is shot three times. He is knocked back, but does not fall. The drow on his side do board, however.
Alex finally finishes his flaming oil bomb, but the only safe place to lob it is onto Alcar's side. The barrel shatters and flames up beautifully, lighting the two prone drow ablaze. The oil pours into the boat as well, igniting gunpowder stored in the ship (apparently to be used to scuttle captured vessels), and the internal explosion causes the boxboat to implode and suck the flaming snipers in. There is too much smoke to tell, but you assume that they are dead.
The other four are still hanging on to the side of the boat, however, and they crest to challenge Alcar, Alex, and the HOrc.
On Akharos' side, the snipers fire four bolts into him, two right in the center of his chest. (2 crits, 2 regular, 44 dmg total, so 60 this round out of 70 total). Akharos is throw down by the force of the blows and is quickly overcome by their poison. Four drow board on his side, too.
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Summary: You estimate that 6 or 7 drow are dead. Elone and Akharos are down due to poison and have taken a lot of dmg. One of the H-Orcs is badly wounded, too.
The rest of you are on the deck of the ship, with Calain's summoned tentacles protecting you somewhat. 11 Drow, apparently fighter types have boarded. At least 4 snipers and two mages are still in/on the boxboats.