Liquidation

Begin by identifying the 11 images (given in alphabetical order).

Images
ARCHBISHOP
EIGHTH NOTE
FRENCH HORN
HARPSICHORD
HAWTHORNE
HEADPHONES
HEDGEHOG
HEXAHEDRON
HIGH VOLTAGE
ICHTHYOSAURUS
WHITE HOUSE

As given, none of these answers will fite in the crossword grid. Using the title of Liquidation as a hint, and noticing common patterns that every answer contains two H's and 1 O, each answer must be liquidated (that is, have its water, or H2O removed) before entering them into the grid.

Doing this gives the grid below.

Extracting the letters by the order given in the grid gives

Number	Letter
1	W
2	A
3	S
4
5	I
6	N
7
8
9	T
10	W
11	A
12	T
13	E
14	R

There are 3 numbers missing the extract, adding in the H2O preciously removed in these spots gives the final answer of WASH IN HOT WATER

This is the fourth method used in an attempt to hatch the vessel.