The Royal Unova

The Royal Unova is a boat found at the dock by the Pokémon Centre in Castelia City. Unlike in Pokémon Black & White, you can go on the boat straight away, as soon as you enter Castelia City. The Royal Unova sets sail once a day, with it's sailing time varying between season.
Spring: 17:00-19:59
Summer: 19:00-20:59
Autumn: 17:00-19:59
Winter: 16:00-18:59
It costs you 1,000 PokéDollars to get on. However, there is a catch. There is a time limit to being on the boat. Once that time limit is passed, the boat redocks at Castelia City and you get given an item based on the trainers you defeated

The Deck

The first bit you'll see are some stairs in which you can climb and get on the deck of the ship. This feature allows you to then watch as the Royal Unova does its journey along the water. It goes under the Sky Arrow Bridge and all the way up to the Marvelous Bridge before looping down and getting back to Castelia City. This feature fully shows off the game's 3D rendering engine

Trainers

In the various rooms of the Royal Unova are numerous characters and trainers. Some will offer you battles, while others will give you a variety of items afterwards. The trainers that battle you will give you a good chunk of money and can be rebattled each day with different ones battling you on different days so be sure to keep coming back.

The items you can receive on the Royal Unova are as follows;

Picture Name Effect Day + Trainers Defeated
Lava Cookie Lavaridge Town's local specialty. It heals all the status problems of one Pokémon. Monday - Four Trainers
Wednesday - Four Trainers
Friday - Four Trainers.
Berry Juice A 100% pure juice made of Berries. It restores the HP of one Pokémon by just 20 points. Tuesday - Three Trainers.
Old Gateau Old Chateau's hidden specialty. It heals all the status problems of a single Pokémon. Thursday - Five Trainers.
RageCandyBar A delicacy from the Johto Region. Heals all status problems. Saturday - Six Trainers.
Rare Candy A candy that is packed with energy. It raises the level of a single Pokémon by one. Sunday - Seven Trainers.

Below is a list of all the trainers you can battle within the Royal Unova.

Ace Trainer マリナ MagnemiteBasculin
Battle Type

Items
Level 18Level 18
Attacks:
Thundershock
Sonicboom
Thunder Wave
Magnet Bomb
Attacks:
Headbutt
Bite
Aqua Jet
Chip Away
Hold Item:
No Item
Hold Item:
No Item
Ace Trainer マリナ RotomButterfreeAlomomola
Battle Type

Items
Level 62Level 62Level 62
Attacks:
Substitute
Electro Ball
Hex
Charge
Attacks:
Safeguard
Captivate
Bug Buzz
Quiver Dance
Attacks:
Helping Hand
Wide Guard
Healing Wish
Hydro Pump
Hold Item:
No Item
Hold Item:
No Item
Hold Item:
No Item
Ace Trainer ヒロト HerdierMarill
Battle Type

Items
Level 18Level 18
Attacks:
Odor Sleuth
Bite
Helping Hand
Take Down
Attacks:
Defense Curl
Rollout
Bubblebeam
Helping Hand
Hold Item:
No Item
Hold Item:
No Item
Ace Trainer ヒロト TaurosWailord
Battle Type

Items
Level 63Level 63
Attacks:
Take Down
Swagger
Thrash
Giga Impact
Attacks:
Amnesia
Dive
Bounce
Hydro Pump
Hold Item:
No Item
Hold Item:
No Item
Youngster ショウタ PidovePatrat
Battle Type

Items
Level 16Level 16
Attacks:
Growl
Leer
Quick Attack
Air Cutter
Attacks:
Bide
Detect
Sand-attack
Crunch
Hold Item:
No Item
Hold Item:
No Item
Youngster ショウタ SpearowLinooneFearow
Battle Type

Items
Level 60Level 60Level 60
Attacks:
Agility
Assurance
Roost
Drill Peck
Attacks:
Bestow
Slash
Rest
Belly Drum
Attacks:
Assurance
Roost
Drill Peck
Drill Run
Hold Item:
No Item
Hold Item:
No Item
Hold Item:
No Item
Lady ハヅキ PurrloinEevee
Battle Type

Items
Level 16Level 16
Attacks:
Assist
Sand-attack
Fury Swipes
Pursuit
Attacks:
Tail Whip
Sand-attack
Growl
Quick Attack
Hold Item:
No Item
Hold Item:
No Item
Lady ハヅキ MeowthVulpixEevee
Battle Type

Items
Level 60Level 60Level 60
Attacks:
Assurance
Captivate
Night Slash
Feint
Attacks:
Fire Blast
Grudge
Captivate
Inferno
Attacks:
Baton Pass
Double-edge
Last Resort
Trump Card
Hold Item:
No Item
Hold Item:
No Item
Hold Item:
No Item
Rich Boy ヒロキ PatratZubat
Battle Type

Items
Level 16Level 16
Attacks:
Bide
Detect
Sand-attack
Crunch
Attacks:
Supersonic
Astonish
Bite
Wing Attack
Hold Item:
No Item
Hold Item:
No Item
Rich Boy ヒロキ AipomMurkrow
Battle Type

Items
Level 61Level 61
Attacks:
Double Hit
Fling
Nasty Plot
Last Resort
Attacks:
Foul Play
Tailwind
Sucker Punch
Torment
Hold Item:
No Item
Hold Item:
No Item
Gentleman ロバート Lillipup
Battle Type

Items
Level 17
Attacks:
Odor Sleuth
Bite
Helping Hand
Take Down
Hold Item:
No Item
Gentleman ロバート HoundourNoctowlHoundoom
Battle Type

Items
Level 60Level 60Level 60
Attacks:
Flamethrower
Crunch
Nasty Plot
Inferno
Attacks:
Zen Headbutt
Synchronoise
Extrasensory
Psycho Shift
Attacks:
Foul Play
Flamethrower
Crunch
Nasty Plot
Hold Item:
No Item
Hold Item:
No Item
Hold Item:
No Item
Clerk リョウタ VenipedePsyduck
Battle Type

Items
Level 16Level 16
Attacks:
Poison Sting
Screech
Pursuit
Protect
Attacks:
Tail Whip
Water Gun
Disable
Confusion
Hold Item:
No Item
Hold Item:
No Item
Clerk リョウタ AriadosFloatzel
Battle Type

Items
Level 61Level 61
Attacks:
Pin Missile
Psychic
Poison Jab
Cross Poison
Attacks:
Razor Wind
Aqua Tail
Agility
Hydro Pump
Hold Item:
No Item
Hold Item:
No Item
Socialite ミツヨ Purrloin
Battle Type

Items
Level 17
Attacks:
Assist
Sand-attack
Fury Swipes
Pursuit
Hold Item:
No Item
Socialite ミツヨ LiepardArbok
Battle Type

Items
Level 61Level 61
Attacks:
Night Slash
Snatch
Nasty Plot
Sucker Punch
Attacks:
Mud Bomb
Gastro Acid
Haze
Coil
Hold Item:
No Item
Hold Item:
No Item
Lass トモ BudewSewaddle
Battle Type

Items
Level 16Level 16
Attacks:
Water Sport
Stun Spore
Mega Drain
Worry Seed
Attacks:
Tackle
String Shot
Bug Bite
Razor Leaf
Hold Item:
No Item
Hold Item:
No Item
Lass トモ ChinglingWormadam
Battle Type

Items
Level 61Level 61
Attacks:
Confusion
Uproar
Last Resort
Entrainment
Attacks:
Flail
Attract
Psychic
Leaf Storm
Hold Item:
No Item
Hold Item:
No Item
Maid ユキコ Elekid
Battle Type

Items
Level 17
Attacks:
Thundershock
Low Kick
Swift
Shock Wave
Hold Item:
No Item
Maid ユキコ EmolgaRaichu
Battle Type

Items
Level 61Level 61
Attacks:
Encore
Volt Switch
Agility
Discharge
Attacks:
Thundershock
Tail Whip
Quick Attack
Thunderbolt
Hold Item:
No Item
Hold Item:
No Item
Lady ハヅキ PurrloinEevee
Battle Type

Items
Level 16Level 16
Attacks:
Assist
Sand-attack
Fury Swipes
Pursuit
Attacks:
Tail Whip
Sand-attack
Growl
Quick Attack
Hold Item:
No Item
Hold Item:
No Item
Lady ハヅキ MeowthVulpixEevee
Battle Type

Items
Level 60Level 60Level 60
Attacks:
Assurance
Captivate
Night Slash
Feint
Attacks:
Fire Blast
Grudge
Captivate
Inferno
Attacks:
Baton Pass
Double-edge
Last Resort
Trump Card
Hold Item:
No Item
Hold Item:
No Item
Hold Item:
No Item