Reinforced chest | OSRS Index

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Reinforced chest



Released								19 November 2025 (Update)
Also called								Reinforced Pirate Chest
Members								Yes
Quest								No
Location								Brittle Isle, Ynysdail
League region								N/A
Options								Picklock
Examine								I wonder what's inside...

Advanced data

Object ID								60517,60518
Link								MOID

The reinforced chest (or reinforced pirate chest) is located on Ynysdail and Brittle Isle, which requires 73 and 81 Sailing to moor at, respectively. It requires 76 Thieving to picklock.

The chest has a chance to be trapped, teleporting the player away from the chest to the south-east of the island (near the mooring point).

The chest is a great source of umbral frags, giving on average one every 7.4 chests.

Locations

Location	Members	Spawns	Map	League region
Brittle Isle		1	Show map	N/A
Ynysdail		1	Show map	N/A

On average, the Brittle Isle failure teleport is 8.4 ticks away from the chest when running, and on Ynysdail it is 7.5 ticks away. With the completion of Song of the Elves and rowboat built on the island, Ynysdail chest can be reached relatively quick compared to the one on the Brittle Isle. The 7x7 square teleport regions are shown in the maps below.

Ynysdail Atoll chest and teleport

Brittle Isle chest and teleport

Thieving info

Chest

Level required					76
Thieving XP					182.5 xp
Type					Chest

Success chance

Success rates are estimated based on 962,297 samples from the Drop Rate Project.

Carrying a lockpick is not required, but it increases the success chance considerably.

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Teleport chance

Success rates are estimated based on 412,842 samples from the Drop Rate Project.

If players fail to loot the chest, there is a small chance to get teleported across the island. The effects of tele block or teleport anchoring scroll do not prevent this.

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Loot

Drop rates are estimated based on 22,528 samples from the Drop Rate Project, unless otherwise cited.

The average chest opening is worth 1,306.37, excluding clues. The average high alch value is 561.74.

Pre-roll

	Item	Quantity	Rarity	Price	High Alch
	Clue scroll (hard)	1	~1/115^{[d 1]}^{[d 2]}	Not sold	12

^ The hard clue scroll drop rate increases to 1/109 after unlocking the hard Combat Achievements rewards tier.
^ Clue scrolls will drop as scroll boxes after the completion of X Marks the Spot.

Weapons

Item	Quantity	Rarity	Price	High Alch
Adamant dagger	1	3/60	253	480
Adamant scimitar	1	3/60	1,368	1,536
Steel cannonball	5–10	3/60	1,360–2,720	15–30
Mithril cannonball	5–10	2/60	785–1,570	180–360
Adamant cannonball	5–10	1/60	1,085–2,170	540–1,080

Gems

There is an 8/60 (1/7.5) chance of rolling the gem table.

Item	Quantity	Rarity	Price	High Alch
Uncut sapphire	1	4/75	228	15
Uncut emerald	1	3/75	473	30
Uncut ruby	1	2/75	1,087	60
Uncut diamond	1	1/75	2,439	120

Frags

There is a 1/60 chance of rolling the Sailing frag drop table, and an additional 4/60 chance to receive two umbral frags.

Item	Quantity	Rarity	Price	High Alch
Umbral frag	2	4/60	7,780	92
Elkhorn frag	1	6/600	146	15
Pillar frag	1	3/600	674	31
Umbral frag	1	1/600	3,890	46

Other

Item	Quantity	Rarity	Price	High Alch
Coins	500–1,000	20/60	500–1,000	500–1,000
Silver bar	1	4/60	103	90
Gold bar	1	4/60	86	180
Death rune	5–10	3/60	925–1,850	540–1,080
Ruby necklace	1	2/60	1,103	1,305
Diamond necklace	1	2/60	1,966	2,205

Key chests	Brimstone chest Bryophyta's chest Civitas illa Fortis Crystal chest Dark Chest Elven Crystal Chest Grubby chest Larran's big chest Larran's small chest Last Man Standing Moon chest Muddy chest Obor's chest Sinister chest Small chest Zombie Pirate's Locker
Thieving	Dorgesh-Kaan Average Dorgesh-Kaan Rich Ogre coffin Stone chest 10 coin chest Nature rune chest 50 coin chest Chaos Druid Tower chest Isle of Souls Dungeon Chest Rogues' Castle chest ^(inside) Ardougne Castle Chest Steel arrowtip chest Underwater Agility and Thieving chest Aldarin chest Rusty pirate chest Tarnished pirate chest Reinforced pirate chest
Raid reward chests	Ancient chest (Chambers of Xeric) Monumental chest (Theatre of Blood) Chest (Tombs of Amascut)
Shades of Mort'ton chests	Bronze Chest (red) Bronze Chest (brown) Bronze Chest (crimson) Bronze Chest (black) Bronze Chest (purple) Steel Chest (red) Steel Chest (brown) Steel Chest (crimson) Steel Chest (black) Steel Chest (purple) Black Chest (red) Black Chest (brown) Black Chest (crimson) Black Chest (black) Black Chest (purple) Silver Chest (red) Silver Chest (brown) Silver Chest (crimson) Silver Chest (black) Silver Chest (purple) Gold Chest (red) Gold Chest (brown) Gold Chest (crimson) Gold Chest (black) Gold Chest (purple)

Other chests

Sailing resources

Mining

Items	Lead ore Nickel ore Rubium Rubium geode Lead bar Cupronickel bar Dragon metal sheet Dragon nails Chain
Scenery	Lead rocks Nickel rocks Rubium rocks

Woodcutting

Logs	Jatoba logs Camphor logs Ironwood logs Rosewood logs
Trees	Jatoba tree Camphor tree Ironwood tree Rosewood tree

Crafting

Construction

Farming

Seeds	Flax Hemp Cotton Camphor Ironwood Rosewood Elkhorn Pillar Umbral
Saplings	Camphor Ironwood Rosewood
Plants	Flax Hemp Cotton Camphor tree Ironwood tree Rosewood tree Elkhorn coral Pillar coral Umbral coral
Corals	Elkhorn Pillar Umbral

Fishing

Hunter

Other

Gryphon feather

Source site	Old School RuneScape Wiki
Canonical source	Reinforced chest
Content license	CC BY-NC-SA 3.0
License status	declared
Picture	Reinforced chest (closed) · file details

Locations

Thieving info

Success chance

Teleport chance

Loot

Pre-roll

Weapons

Gems

Frags

Other

See also