Randall sees about the same on the port side. Roughly another 7 about half way up and roughly 7 just emerging from the surf of the waves lapping against the hull of the ship.

(You all have 1 round to do something... any other preparations, or anything you can think of before I start the initiative?)

Randall:

Once Randall casts his spell and moves over to see the sea devils approaching, he prepares to unleash divine power upon their murderous forms!

(Blass and drawing weapon/moving was his round I would surmise.  If he has another preparation round, I’m sure he can come up with something…)

Petcan draws his rapier and waves his hand across Randall and Bow, twin-casting Haste on them as the assailants rise. 

(@Randall: You actually did post it before I posted the 1-round preparation post (feel like too many 'post's' in this sentence, lol) so it's fair to allow you to do something alongside everyone else.)

(@All: this is not an attack round, sorry, but if you have no preparation and wish to move right into Initiative then just post Dodge and/or pass and we can all begin the Sahaugin Boarding Attack scenario.)

Randall:

Casting another spell on himself, just in case, Randall prepares to meet the attack!  The other party members and 6 of the crew feel slightly buoyant, as it they could walk on water if they so desired…

Water Walk

"Thank ye brother, now we should probably take care of these things,"

(How far is it to the water? If we jump down can we make it ok? If so Ceo will jump down on the port side)

(ooc: it is some 25 to 30 feet from the railing to the sea depending on the swell of the waves. you will take 3d6 falling damage and land prone unless you have a feature or trait that is relevant to falling/damage.)

Bow imbues his crossbow with rite of the dawn taking 2 in the process.

Initiative rolls: 

Bow: 10 

Randall: 1 

Ceo: 25 

Petcan: 20 

Starboard Sahuagin: 16 

Port Sahaugin: 18 

Sahaugin Priestess: 18 

Initiative Order:

Bow
Randall
Ceo
Sahaugin Priestess
Port Sahaugin
Petcan
Starboard Sahaugin

Round 1

(Bow is up. Randall is next.)

(Is the priestess obviously different than the others?  Which side of the ship is she on?)

Yes, the Priestess is different than the others, hangs back and gives orders which is also noticeable. She is on Port side with 7 Sahaugin, there are another 7 Sahaugin on the Starboard side. 

Seeing that one of the creatures, that Bow, most likely, has never seen before, seems to be commanding the others Bow focusses his fire on her. He shoots of 4 shots (2 from attack, 1 BA, 1 hasted attack)

Attack: 24 Damage: 18

Attack: 11 Damage: 23

BA Attack: 17 Damage: 24

Hasted Attack: 10 Damage: 23

Randall:

Likewise focusing his attacks, Randall calls down holy fire on the priestess leader and follows up with a glowing mace of force that smashes at her as well.  He holds Lightbringer high, it’s glowing head ready to bash any oncoming sea devils.

Effects active:  Bless, Haste, Water Walk

Action:  Sacred Flame:  10 radiant damage, Dexterity Save DC 16 to avoid

Bonus Action:  Spiritual Weapon:  

Attack:  10 plus.Bless:  4

Damage:  13

Bow's deadly shooting with the crossbow drops the Sahaugin Priestess.

Randall can redirect his attacks or take different actions as he would of known she was down before the start of his turn. Feel free to make a new post explaining which he would prefer.

(Ceo is up.)

Randall:

Seeing the priestess go down, Randall attacks instead the enemies closest to him.

Sahuagin DEX save: 20 

Randall's spiritual weapon strikes true and the Sahuagin coughs up some blood.

(Ceo is up.)

(Should we bot Ceo for now?)