Walkthrough
Since you won't have access to the Pokemon Gym when you arrive in Vermilion City, there won't be much more to do except board the S.S. Anne in the Vermilion City Harbor. This large cruise ship is presently docked there, being full of trainers looking to battle as they wait for the cruiser to continue onward. The goal here is to battle these trainers on your way to finding the S.S. Anne Captain, the same that will give you HM Cut so you can battle the Vermilion City Gym.
Trainers
Deck:
Sailor Trevor: Level 17 Machop, Level 17 Tentacool
Sailor Edmond: Level 18 Machop, Level 18 Shellder
1st Floor:
Gentleman Thomas: Level 18 Growlithe, Level 18 Growlithe
Gentleman Arthur: Level 19 Nidoran Male, Level 19 Nidoran Female
Lass Ann: Level 18 Pidgey, Level 18 Nidoran Female
Youngster Tyler: Level 21 Nidoran Male
2nd Floor:
Fisherman Dale: Level 17 Goldeen, Level 17 Tentacool, Level 17 Goldeen
Gentleman Brooks: Level 23 Pikachu
Lass Dawn: Level 18 Rattata, Level 18 Pikachu
Gentleman Lamar: Level 17 Growlithe, Level 17 Ponyta
Basement Floor 1:
Sailor Duncan: Level 17 Horsea, Level 17 Sheller, Level 17 Tentacool
Sailor Leonard: Level 21 Shellder
Sailor Dylan: Level 17 Horsea, Level 17 Horsea, Level 17 Horsea
Sailor Huey: Level 18 Tentacool, Level 18 Staryu
Fisherman Barny: Level 17 Tentacool, Level 17 Staryu, Level 17 Shellder
Sailor Phillip: Level 20 Machop
Items:
1st Floor:
TM31: On Ground
Great Ball: On Ground
Pecha Berry: ItemFinder
Cheri Berry: ItemFinder
Chesto Berry: ItemFinder
2nd Floor:
Stardust: On Ground
X Attack: On Ground
3rd Floor:
HM01: From S.S. Anne Captain
Basement Floor 1:
Super Potion: On Ground
Ether: On Ground
TM33: On Ground
Hyper Potion: ItemFinder