| Item Name↑ | Code Name | Version | Type | Category | Mod | |
 | Squashsummer Seeds | HCSquashsummerseeds | B41 Beta | Normal | Seeds ND | Hydrocraft |
 | Squid | Squid | 41.1 | Food | items_food | Classic |
 | Squid | HCSquid | B41 Beta | Food | Food Seafood | Hydrocraft |
 | Squid Calamari | SquidCalamari | 41.1 | Food | items_food | Classic |
 | Sriracha | HCSriracha | B41 Beta | Food | Food Condiments | Hydrocraft |
 | Stack of Cardboard Boxes | HCCardboardboxstack | B41 Beta | Normal | Containers | Hydrocraft |
 | Stack of Napkins | HCNapkinstack | B41 Beta | Normal | Kitchen | Hydrocraft |
 | Stack of Plastic Cups | HCPlasticcupstack | B41 Beta | Normal | Kitchen | Hydrocraft |
 | Stack of Plastic Plates | HCPlasticplatestack | B41 Beta | Normal | Kitchen | Hydrocraft |
 | Stack of Plastic Plates | HCPlasticplatestack2 | B41 Beta | Normal | Kitchen | Hydrocraft |
 | Stack of Porcelain Plates | HCPorcelainplatestack | B41 Beta | Normal | Pottery | Hydrocraft |
 | Stack of Porcelain Saucers | HCPorcelainsaucerstack | B41 Beta | Normal | Pottery | Hydrocraft |
 | Stack of Styrofoam Cups | HCStyrofoamcupstack | B41 Beta | Normal | Kitchen | Hydrocraft |
 | Stairs Piece | Stairs | 41.1 | Normal | items | Classic |
 | Stake | Stake | 41.1 | Weapon | items_weapons | Classic |
 | Stamp Mill | HCStampmill | B41 Beta | Normal | Stoneworking | Hydrocraft |
 | Stamp Mill Wheel | HCStampmillwheel | B41 Beta | Normal | Carpentry | Hydrocraft |
 | Stamp Mill with Crank | HCStampmillcrank | B41 Beta | Normal | Stoneworking | Hydrocraft |
 | Stamp Mill with Generator | HCStampmillgen | B41 Beta | Normal | Stoneworking | Hydrocraft |
 | Stamp Mill with Steam Machine | HCStampmillsteam | B41 Beta | Normal | Stoneworking | Hydrocraft |
 | Staple Gun | HCStaplegunfull | B41 Beta | Drainable | Office | Hydrocraft |
 | Staple Remover | HCStapleremover | B41 Beta | Normal | Office | Hydrocraft |
 | Stapler | HCStaplerfull | B41 Beta | Drainable | Office | Hydrocraft |
 | Staples | HCStaples | B41 Beta | Normal | Office | Hydrocraft |
 | Star Anise | HCStaranise | B41 Beta | Food | Food Condiments | Hydrocraft |
 | Star Chart | HCStarchart | B41 Beta | Normal | Astronomy | Hydrocraft |
 | Star Chart Board | HCStarchartboard | B41 Beta | Normal | Astronomy | Hydrocraft |
 | Starter Fluid | HCStarterfluid | B41 Beta | Drainable | Auto | Hydrocraft |
 | Steak | Steak | 41.1 | Food | items_food | Classic |
 | Steak Knife | HCSteakknife | B41 Beta | Weapon | Kitchen | Hydrocraft |
 | Steak Seasoning | HCSteakseasoning | B41 Beta | Food | Food Condiments | Hydrocraft |
 | Steam Boiler | HCSteamboiler | B41 Beta | Normal | Industrial | Hydrocraft |
 | Steam Engine | HCSteamengine | B41 Beta | Normal | Industrial | Hydrocraft |
 | Steam Hammer | HCSteamhammer | B41 Beta | Normal | Industrial | Hydrocraft |
| Steam Hammer | HCSteamhammer2 | B41 Beta | Container | Industrial | Hydrocraft |
 | Steam Machine | HCSteammachine | B41 Beta | Normal | Industrial | Hydrocraft |
 | Steam Pressure Pot | HCSteampot | B41 Beta | Normal | Medical | Hydrocraft |
 | Steam Pressure Pot Blueprint | HCBlueprintsteampot | B41 Beta | Literature | Blueprints | Hydrocraft |
 | Steel Arm Guards | HCArmarmorsteel | B41 Beta | Normal | Armor | Hydrocraft |
 | Steel Armor | HCArmorsteel | B41 Beta | Normal | Armor | Hydrocraft |
 | Steel Bastard Sword | HCBastardswordsteel | B41 Beta | Weapon | Weapons Blades | Hydrocraft |
 | Steel Battleaxe | HCBattleaxesteel | B41 Beta | Weapon | Weapons Axes | Hydrocraft |
 | Steel Beam | HCSteelbeam | B41 Beta | Normal | Smithing | Hydrocraft |
 | Steel Crank | HCCrank | B41 Beta | Normal | Smithing | Hydrocraft |
 | Steel Dagger | HCDaggersteel | B41 Beta | Weapon | Weapons Blades | Hydrocraft |
 | Steel Fan Blade | HCFanbladesteel | B41 Beta | Normal | Industrial | Hydrocraft |
 | Steel Fishhook | HCFishhooksteel | B41 Beta | Normal | Fishing | Hydrocraft |
 | Steel Gauntlets | HCGlovesteel | B41 Beta | Normal | Armor | Hydrocraft |
 | Steel Gear | HCGearsteel | B41 Beta | Normal | Industrial | Hydrocraft |
 | Steel Great Sword | HCGreatswordsteel | B41 Beta | Weapon | Weapons Blades | Hydrocraft |
 | Steel Greaves | HCBootsteel | B41 Beta | Normal | Armor | Hydrocraft |
 | Steel Halberd | HCHalberdsteel | B41 Beta | Weapon | Weapons Polearms | Hydrocraft |
 | Steel Hatchet | HCHatchetsteel | B41 Beta | Weapon | Weapons Axes | Hydrocraft |
 | Steel Helmet | HCHelmsteel | B41 Beta | Normal | Armor | Hydrocraft |
 | Steel Ingot | HCSteelingot | B41 Beta | Normal | Metalurgy | Hydrocraft |
 | Steel Knife | HCKnifesteel | B41 Beta | Weapon | Weapons Blades | Hydrocraft |
 | Steel Knuckle | SteelKnuckle | 41.1 | Normal | camping | Classic |
 | Steel Leg Guards | HCLegarmorsteel | B41 Beta | Normal | Armor | Hydrocraft |
 | Steel Long Sword | HCLongswordsteel | B41 Beta | Weapon | Weapons Blades | Hydrocraft |
 | Steel Pipe | HCSteelpipe | B41 Beta | Weapon | Smithing | Hydrocraft |
 | Steel Pole | HCSteelpole | B41 Beta | Normal | Smithing | Hydrocraft |
 | Steel Pulley | HCPully | B41 Beta | Normal | Industrial | Hydrocraft |
 | Steel Ring | HCMetalring | B41 Beta | Normal | Smithing | Hydrocraft |
 | Steel Ring | HCRingsteel | B41 Beta | Normal | Rings | Hydrocraft |
 | Steel Rod | HCSteelrod | B41 Beta | Normal | Smithing | Hydrocraft |
 | Steel Scythe | HCScythesteel | B41 Beta | Weapon | Weapons Polearms | Hydrocraft |
 | Steel Sheet | HCSteelsheet | B41 Beta | Normal | Smithing | Hydrocraft |
 | Steel Shield | HCShieldsteel | B41 Beta | Normal | Armor | Hydrocraft |
 | Steel Short Sword | HCShortswordsteel | B41 Beta | Weapon | Weapons Blades | Hydrocraft |
 | Steel Shuriken | HCShurikensteel | B41 Beta | Weapon | Weapons Blades | Hydrocraft |
 | Steel Sickle | HCSicklesteel | B41 Beta | Weapon | Weapons Blades | Hydrocraft |
 | Steel Smithy Hammer | HCSmithyhammersteel | B41 Beta | Weapon | Weapons Hammers | Hydrocraft |
 | Steel Spear | HCSpearsteel | B41 Beta | Weapon | Weapons Polearms | Hydrocraft |
 | Steel Spiked Flail | HCSpikedflailsteel | B41 Beta | Weapon | Weapons Hammers | Hydrocraft |
 | Steel Spiked Mace | HCSpikedmacesteel | B41 Beta | Weapon | Weapons Hammers | Hydrocraft |
 | Steel Spring | HCSteelspring | B41 Beta | Normal | Trapping | Hydrocraft |
 | Steel Trident | HCTridentsteel | B41 Beta | Weapon | Weapons Polearms | Hydrocraft |
 | Steel War Hammer | HCWarhammersteel | B41 Beta | Weapon | Weapons Hammers | Hydrocraft |
 | Steel Wheel | HCMetalwheel | B41 Beta | Normal | Industrial | Hydrocraft |
 | Steel Wire | HCWiresteel | B41 Beta | Drainable | Industrial | Hydrocraft |
 | Steel Working Textbook | HCBooksteelworking | B41 Beta | Literature | Books | Hydrocraft |
 | Step Ladder | HCStepladder | B41 Beta | Normal | Tools | Hydrocraft |
 | Sterilized Bandage | AlcoholBandage | 41.1 | Normal | newitems | Classic |
 | Sterilized Menstrual Pad | HCMenstrualpadAlcohol | B41 Beta | Normal | Bathroom | Hydrocraft |
 | Sterilized Rag | AlcoholRippedSheets | 41.1 | Normal | items | Classic |
 | Sterioscope Reel | HCToysterioscopereel | B41 Beta | Normal | Toys | Hydrocraft |
 | Sterling Silver Fork | HCSterlingsilverfork | B41 Beta | Weapon | Kitchen | Hydrocraft |
 | Sterling Silver Ingot | HCSterlingsilveringot | B41 Beta | Normal | Metalurgy | Hydrocraft |
 | Sterling Silver Knife | HCSterlingsilverknife | B41 Beta | Weapon | Kitchen | Hydrocraft |
 | Sterling Silver Spoon | HCSterlingsilverspoon | B41 Beta | Weapon | Kitchen | Hydrocraft |
 | Stethoscope | HCStethoscope | B41 Beta | Normal | Medical | Hydrocraft |
 | Stick Lure | HCLurestick | B41 Beta | Normal | Fishing | Hydrocraft |
 | Stick of Chewing Gum | HCGumstick | B41 Beta | Food | Food Candy | Hydrocraft |
 | Stick of Chewing Gum | HCGumstick2 | B41 Beta | Food | Food Candy | Hydrocraft |
 | Stick of Chewing Gum | HCGumstick3 | B41 Beta | Food | Food Candy | Hydrocraft |
 | Stick Trap | TrapStick | 41.1 | Normal | newitems | Classic |
| Stick Trap Blueprint | HCBlueprinttrapstick | B41 Beta | Literature | Blueprints | Hydrocraft |
 | Stick Trap Tablet | HCTabletsticktrap | B41 Beta | Literature | Tablets | Hydrocraft |
 | Stir fry | PanFriedVegetables | 41.1 | Food | items_food | Classic |
| Stir fry | GriddlePanFriedVegetables | 41.1 | Food | items_food | Classic |
