MOB Flashcards
Factors influencing an effective recovery
(list 5)
- Weather
- Sea Temp
- Day/Night
- Crew Experience
- Time Delay
Geographic Location
No. Search Units
Condition of the person falling
Some factors that will affect speed of recovery
(list 6)
- Ship manoeuvring characteristics
- Wind + Sea State
- Experience of Crew
- Visibility
- Recovery Technique
- Other vessels assisting
Engine capabilities
Location of incident
Anderson Turn
Used if casualty witnessed
1. Fastest recovery method
2. used by most ships with considerable power
3. Good for ships with tight turning characteristics
4. Difficult for single screw vessel
5. Approach to person not straight
single turn_hardover_250 deg midships_stop
Williamson Turn
- Makes good original track line
- Good in reduced visibility
- Simple
- Takes ship farther away from scene of incident
- Slow Procedure
hard over_ 60 deg off course_hard over_20 deg short recip course_midship
Requirements of the OOW in the event of a MOB
Liefbuoy with light and smoke
Look outs
GNSS MOB marker
MOB on ECDIS
Hand steering
Immediate turning for safety of MOB
General Emergency alarm + 3 prolonged blasts (OSCAR)
Call Master
Recovery manoeuvre
Prepare for recovery
Broastcast DISTRESS message
Engines on standby
Assume role On Scene Coordinator
Signal flag OSCAR
Maintain Log
Initial Action
- Turn towards casualty
- Lifebuoy Light + Smoke
- Oscar (3 prolonged)
- General Alarm, Muster Crew
- Inform Master
- Decide Recovery Method
- Hit MOB button in Bridg
- Lookouts with BINOS
- Rescue boat team ready w/ VHFs
- Broadcast DISTRESS message
Witnessed vs Unwitnessed
1.Immediate (witnessed)
2. Delayed (unwitnessed)
3. Missing Persons (unwitnessed)
Search Patterns
Use the book IAMSAR VOL III
Use tenders/jetskis/rescue boat to assist
-Expanding Square
-Straight back down heading with other craft / heli zig zagging over
