Waves

Special; Area
Changes the surface calmness of any large body of water. Each application of the spell can increase or decrease the wave height by one point on the Beaufort scale (below); to achieve multiple-point changes, multiply the spell’s cost accordingly. The wind is unaffected.
Note that the Beaufort scale is specific to ocean waves; waves produced on lake shores are generally much lower relative to wind speed (GM’s judgment).
The spell may be cast on an area, affecting the waves moving across it. It can also be cast on an object, such as a ship, which it must then encompass in its entirety (typically, 10 to 30 yards in radius). The area of effect then moves with the object.

Duration: 1 hour.
Base cost: 1/60 (minimum 1). Same cost to maintain.
Time to cast: 1 minute.
Prerequisite: Shape Water.

Item
Staff, wand, or jewelry.
Energy cost to create: 300.

The Beaufort Scale

Beaufort Degree	Description	Wind Speed (mph)	Average Wave Height at Sea (feet)	Notes
0	Calm		0
1	Light Air	1-3	0
2	Light Breeze	4-7	0-1
3	Gentle Breeze	8-12	1-2	Breaking crests
4	Moderate Breeze	13-18	2-4	Some foam
5	Fresh Breeze	19-24	4-8
6	Strong Breeze	25-31	8-13	Some spray
7	Moderate Gale	32-38	13-20	Some spindrift
8	Fresh Gale	39-46	13-20
9	Strong Gale	47-54	13-20	Sea begins to roll
10	Whole Gale	55-63	20-30	Visibility affected
11	Storm	64-72	30-45
12	Hurricane	73-82	45
13	Hurricane	83-92
14	Hurricane	93-103
15	Hurricane	104-114
16	Hurricane	115-125
17	Hurricane	126+