OSRS Boss Gear & Inventories

Great White Sharks

Combat level 175 · 243 hitpoints

Ocean monsters added with the Sailing skill on 19 November 2025. Fought FROM YOUR BOAT with its cannon, not on foot. This is the flagship test of the boat-cannon system. They spawn across nine ocean regions (Dusk's Maw, Gulf of Kourend, The Lonely Sea, Misty Sea, Sapphire Sea, The Skullhorde, Southern Expanse, Tirannwn Bight), 5 to 36 per location.

Requirements

• 75 Sailing (bounty tasks)
• A boat with a cannon fitted
• Cannonballs, bronze through dragon

Pointers

• THIS IS BOAT COMBAT. Your damage comes from the boat cannon, so the cannon tier and your cannonball stock are the real "gear": bronze through dragon cannons and matching cannonballs.
• They pay for their own ammo: sharks drop rune cannonballs (24-36) and dragon cannonballs (12-18), so a trip largely restocks itself.
• NO KEEL FULLY PROTECTS AGAINST THEM. Expect hull damage every trip and plan repairs; picking a keel is damage reduction, not immunity.
• They are aggressive, 4x4, 243 HP, max hit 15, attacking every 4 ticks with a SLASH-based attack.
• They have +100 light ranged defence and NO elemental weakness. Light ranged weaponry is the wrong answer.
• You can safespot them in The Lonely Sea by exploiting the positioning there.
• The money is in the rare table: Broken dragon hook (1/500, 1/250 on a bounty task, ~1.35m) and Dragon keel parts (1/1,000, ~311k). Average kill is ~16k.
• Bounty tasks give 40,370 Sailing XP and ask for 25-30 shark jaws or 5 livers depending on the notice board.

What the sim brings here

Every worn slot and every inventory row below is the combat simulation's own output, at the style it ranks fastest for each account tier. Each line carries the channel that chose it: sim means the model solved it, and inherited means the value came through from the hand-authored loadout the solver starts from. Riding through a generator does not make a value derived, so those are marked rather than presented as the model's answer. A line marked unattributed carries a channel the model's own vocabulary no longer declares, so no word is put on it at all rather than one being read off the channel's spelling. Where the model has not answered a row, its own refusal is printed instead; where it has answered a row it doubts, the answer is printed with the doubt attached rather than withheld.

What each of those badges means

• derived:ascent (sim): an accepted coordinate-ascent move: betterThan() preferred this candidate over the incumbent under the row objective and band. The weapon+ammo+shield pairing and the crystal set arrive here too, because both are offered to the same acceptance test.
• derived:cheapestEqual (sim): cheapestOfEquals(): at budget, an exactly-tied cheaper item replaced the one in this slot. It changes the price and, by construction, not the score.
• derived:composed (sim): balanceInventory() sized this row from the derived supply menu. The menu enumerates CONSUMABLES and narrows by style, tier and price; it is not the authored bag.
• derived:empty (sim): the finished loadout leaves this slot EMPTY, and that is an ANSWER rather than a gap: a two-handed weapon forfeits the shield and a weapon that stores its own ammunition frees the ammo slot. Recorded so a null slot is never read as unprovenanced.
• derived:pouch (sim): derivePouchInto(): the rune pouch and its loose overflow, from the spell the build actually casts and the pouch slot criterion. Not from a pouch a human typed.
• ruled:escape (ruled): escapeLeg(): the way OUT, taken from the typed per-tier table ESCAPE_PLAN and judged against the account, with nothing substituted and no fallback ladder. The ACCOUNT CHECK is a derivation; the CHOICE of item is not, so this is not a `derived:` channel. ESCAPE_PLAN carries no attributedTo field (PROVENANCE_BACKLOG: silent-and-unattributed), so this channel does not claim one either.

Great White Sharks strategies on the OSRS Wiki