6.1.10 Cooling Bath:
6.1.10.1 The type of cooling bath is optional, but it shall be
of a shape and size suitable for containing the jacket (see 6.1.3)
in a stable and upright position at the required depth.
6.1.10.2 The bath shall be fitted with a cover with one or
more holes in it to accommodate the supporting ring (see
6.1.6). The jacket (see 6.1.3) may be permanently mounted in
the cover.