OSRS Lost Casket rewards guide 2026: sailing levels, loot tables and ocean encounter strategy
Lost caskets are ocean encounters found at sea that roll one item from the corresponding treasure trail tier's loot table per retrieval. There are six tiers: Beginner (sailing 5, 25 XP), Easy (25, 50 XP), Medium (50, 150 XP), Hard (70, 235 XP), Elite (85, 335 XP), and Master (94, 450 XP). Caskets can spawn at any sailing level, but you need the minimum level to retrieve them. Ineligible players see the message 'You should ask the Captain for help.' Each casket rolls once from the tier's clue table, so a Master casket can roll from the same table as a Master clue scroll reward. Caskets are one of three main reward-generating ocean encounters alongside lost crates and pearls.
Key takeaways
- Six casket tiers: Beginner (5), Easy (25), Medium (50), Hard (70), Elite (85), Master (94).
- XP per casket: 25, 50, 150, 235, 335, 450 respectively.
- Each casket rolls once from the corresponding treasure trail tier's loot table.
- Caskets spawn at any sailing level but require minimum level to retrieve.
- Part of the Sailing ocean encounter system alongside lost crates and pearls.
What are Lost Caskets?
Lost caskets are ocean encounters found at sea in the Sailing minigame. When you retrieve a casket, it rolls once from the treasure trail reward table of the corresponding tier and awards a small amount of Sailing XP.
They sit alongside lost crates and pearls as the three main reward-generating ocean encounter types. Unlike clue scrolls, which require solving a puzzle, caskets are retrieved directly from the ocean — the trade-off is that you get a single roll instead of the full clue scroll reward chain.
All six tiers: minimum levels and XP
Caskets can spawn at any sailing level, but you need a minimum sailing level to retrieve them. Below the minimum, the casket appears but you see the message 'You're not sure what to do with those goods. You should ask the Captain for help.'
The six tiers follow a clear progression: Beginner at sailing 5 with 25 XP, Easy at 25 with 50 XP, Medium at 50 with 150 XP, Hard at 70 with 235 XP, Elite at 85 with 335 XP, and Master at 94 with 450 XP. The XP scaling is not linear — the jump from Easy to Medium is threefold, and Medium to Hard is another significant step. This means medium and above are the efficient tiers for sailing XP farming.
- Beginner: Sailing 5, 25 XP per casket.
- Easy: Sailing 25, 50 XP per casket.
- Medium: Sailing 50, 150 XP per casket.
- Hard: Sailing 70, 235 XP per casket.
- Elite: Sailing 85, 335 XP per casket.
- Master: Sailing 94, 450 XP per casket.
What each tier rolls from
Each casket rolls once from the corresponding treasure trail tier's loot table. A Beginner casket rolls from the Beginner clue table, an Easy casket from the Easy table, and so on up to Master. This means a Master casket can drop anything a Master clue scroll reward would — including rare items like the Fire Cape, Dragon scimitar, or high-tier clue scrolls.
The single roll is the key limitation. A Master clue scroll gives you multiple stages of rewards (clue scroll itself, the puzzle pieces, the final reward), while a Master casket gives you one item from that table. The expected value per casket is therefore lower than the full clue chain, but the time investment is also dramatically lower since there is no puzzle solving.
How to find and retrieve caskets
Caskets spawn randomly as part of the ocean encounter system. You sail at sea and when a casket appears, you interact with it through the Captain's commands. If your sailing level meets the minimum for that tier, you retrieve it and receive the loot and XP.
There is no guaranteed spawn rate or location — caskets are random ocean encounters like any other. The best strategy is to sail in open water areas with minimal obstacles, which reduces travel time between encounters. The Sailing skill itself is the gatekeeper: higher sailing levels unlock higher-tier caskets and more encounter variety.
Optimal sailing routes for casket farming
The most efficient casket farming routes focus on minimizing travel time between ocean encounters. Open water areas with few obstacles are ideal, as they allow continuous sailing without navigating around islands or hazards.
For medium and below, the waters near Brimhaven or the Sailing Tutorial area offer quick access and reasonable encounter density. For hard and above, the waters further out — particularly the southern routes — have the higher-tier caskets that justify the travel time. The key is to plan a route that covers the most water with the fewest turns.
Caskets vs. lost crates vs. pearls
Lost caskets, lost crates, and pearls are the three main reward-generating ocean encounters. Caskets give treasure trail loot rolls, crates give raw materials (wood, iron, etc.), and pearls give Sailing XP with no item rewards. The choice depends on your goal: caskets for treasure trail items, crates for crafting materials, pearls for pure sailing XP.
In practice, caskets and pearls are often encountered together — the same ocean route that gives you high-tier caskets also gives you pearls. Crates are separate spawns and are more common in specific waters.
Questions players ask
What is the minimum sailing level for a Master Lost Casket?+
Sailing level 94 is required to retrieve a Master Lost Casket. Below this level, the casket appears but you cannot retrieve it.
Can I get a Fire Cape from a Lost Casket?+
Yes, Master Lost Caskets roll from the same table as Master clue scroll rewards, which includes the Fire Cape. However, the drop rate is the same as a Master clue scroll's first roll — the casket just gives you one roll instead of the full puzzle chain.
How often do Lost Caskets spawn?+
Caskets spawn as random ocean encounters with no guaranteed rate or specific location. The spawn rate is not documented by the developers, but they are encountered at a frequency comparable to other ocean encounters.
Are Lost Caskets worth farming for sailing XP?+
For pure sailing XP, pearls are more efficient since they give XP without item rewards that you might not need. However, if you value the treasure trail items, caskets are the better choice — the XP is a bonus.
Do Lost Caskets work for all tiers of treasure trails?+
Yes, there is one Lost Casket for each of the six treasure trail tiers: Beginner, Easy, Medium, Hard, Elite, and Master. Each rolls once from the corresponding tier's loot table.
Sources and verification
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