6-6 Change A
U.S. Navy Diving ManualVolume 2
UCT Arctic Operations Manual
Design and Installation of Near-
shore Ocean Cable Protection
For more information on ocean
construction, commands should consult
NAVFAC Ocean Facilities Program.
Demolition Missions. Diving opera-
tions may include demolition duties to
remove man-made structures such as
barriers, sunken naval craft, and dam-
aged piers. Demolition operations are
conducted by blasting, freeing, flat-
tening, or cutting with explosives.
Divers may also be assigned to destroy
natural formations, such as reefs, bars,
and rock structures that interfere with
transportation routes. All personnel
involved in handling explosives shall
be qualified in accordance with the
OPNAVINST 8023.2 series.
Combat Swimmer Missions. Combat swimmers conduct reconnaissance and
neutralization of enemy ships, shore-based installations, and personnel. Some
missions may require an underwater approach to reach coastal installations unde-
tected. Reconnaissance missions and raids may expose the combat swimmers to
additional risk but may be necessary to advance broader warfare objectives.
Enclosed Space Diving. Divers are often required to work in enclosed or
confined spaces. Using surface-supplied Underwater Breathing Apparatus (UBA)
(MK 20 MOD 0, MK 21 MOD 1, or EXO BR MS), divers may enter submarine
ballast tanks, mud tanks, or cofferdams, which may be in either a flooded or dry
condition. Access to these spaces is normally restrictive, making it difficult for the
diver to enter and exit. Enclosed space diving shall be supported by a surface-
supplied air system. Refer to section 8-11.4 for more information on the hazards of
enclosed space diving.
COLLECT AND ANALYZE DATA
Information pertinent to the mission objective shall be collected, organized, and
analyzed to determine what may affect successful accomplishment of the objec-
tive. This process aids in:
Figure 6-4. Underwater Construction