# Grappling hook

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Name

grappling hook

Appearance

iron hook

Damage vs. small

1d2

Damage vs. large

1d6

To-hit bonus

+0

Weapon skill

flail

Size

one-handed

Base price

50 zm(+10/positive enchant)

Weight

30

Material

iron

A grappling hook is a weapon-tool that uses the flail skill. When unidentified, it appears as an iron hook.

The following information pertains to an upcoming version (NetHack 3.7.0). If this version is now released, please verify that it is still accurate, then update the page to incorporate this information.

It is no longer referred to as an iron hook, being identified by default, and always appears as "grappling hook". 
Contents

1 Effects

1.1 Range
1.2 Possible outcomes
1.3 Grabbing items
1.4 Dragging yourself
1.5 Monsters

2 Encyclopedia entry
3 References

Effects
Range
You can apply a grappling hook to a location up to a distance determined by your skill in the use of flails:

........ESUSE..SUUUS.   U: unskilled or basic.UU@UU.   S: skilled.SUUUS.   E: expert.ESUSE........
You can only apply the hook at a space you can see without astral vision.[1]

Possible outcomes
You can attempt to grab an item on that square, drag yourself towards a spot on the ground, attack a monster, drag a tiny monster to you, or you may end up accidentally hitting yourself (doing 10–19 points of damage). You cannot hit yourself if you are Skilled or Expert.
If you are Unskilled or Basic, there are equal chances of nothing happening, hitting an item, hitting a monster, hitting the ground, or hooking yourself.[2] If you are at least Skilled, you can select which target you are aiming for. If Skilled, you have a 50% chance of achieving what you try to, and a 95% chance at Expert; otherwise, there are equal chances of each outcome other than hooking yourself. If you can't decide which to choose, you may type enter to trigger a random effect.
If you select or get an item or monster as a target, and there is no such thing present on the target space, nothing happens.

Grabbing items
When grabbing an item, you will always snag the item that was last dropped on that square. Only one item from the stack at a time can be snagged this way.[3] This can be used to snag items from the ground while levitating.

Dragging yourself
When dragging yourself towards the ground, you will only be dragged one square. If you are trapped, you instead remain trapped and may take further damage from the trap.[4]

Monsters
A tiny monster may be dragged with a 25% probability; otherwise, it is simply hit. Larger monsters are always hit. When grappling a monster that is strong or at least large, there is a 25% chance that you will be pulled toward the ground instead, unless the space has water or air, in which case there is no effect.[5]

Encyclopedia entry

But as for Queequeg -- why, Queequeg sat there among them -- at the head of the table, too, it so chanced; as cool as an icicle.  To be sure I cannot say much for his breeding.  His greatest admirer could not have cordially justified his bringing his harpoon into breakfast with him, and using it there without ceremony; reaching over the table with it, to the imminent jeopardy of many heads, and grappling the beefsteaks towards him.

[ Moby Dick, by Herman Melville ] 

References

↑ src/apply.c in NetHack 3.6.0, line 2962

↑ src/apply.c in NetHack 3.6.0, line 2971

↑ src/apply.c in NetHack 3.6.0, line 3014

↑ src/dothrow.c in NetHack 3.6.0, line 710

↑ src/apply.c in NetHack 3.6.0, line 3036

This page may need to be updated for the current version of NetHack.
It may contain text specific to NetHack 3.6.0. Information on this page may be out of date.
Editors: After reviewing this page and making necessary edits, please change the {{nethack-360}} tag to the current version's tag or {{noversion}} as appropriate.