UWSH Board Flashcards
What are the 3 types of inspections?
Type 1 - non system specific non invasive
Type 2 - system specific non invasive
Type 3 - system specific invasive
What company makes the rubber for the sonar domes and their patches?
BF Goodrich
HP2 Elastilock
What are the 3 types of propellers?
Fixed
Built Up
CPP
What is an appendage? Name at least 4 appendages on a DDG?
Something that protrudes from the hull underwater.
Strut
Rod meter
Sonar Dome
Scoops
Where would you look for info on propellers?
Chapter 3 - Propellers
Chapter 12 - CPP
Where is the suction and pressure face of a propeller?
Suction face is forward
Pressure face is aft
What is the significance of PDR-40?
PDR-40 is soft blistering caused by corrosion or rusting in the hulls metal leading to the development of gas bubbles.
*The significance is that the hull itself, not just the paint, is showing damage.
What is the MFR Scale?
The Marine Fouling Rate is a
0-100 scale in increment of 10
0-30 : slime and sea grass
40-90 : hard growth, tube worms, oysters
100 : composite
What are the types of DC Plugs? Which is preferred?
Wooden and Mechanical
Mechanical is preferred because there is no swelling
What are the distance requirements for active SONAR?
Helmeted - 3000yds moving into divers comfort
Unhooded - 1000yds moving into divers comfort
Hooded - 600yds moving into divers comfort
What are the 3 types of 688 Submarines?
1st Flight = fairwaters, no VLS
2nd Flight = fairwaters, VLS
688i = Bowplanes , VLS
What are the prop holes filled with prior to reinstallion?
Hydro Lube
What temperature does epoxy fail to cure?
50 degrees
What type of hydraulic fluid do we use and what are the operating ranges?
Houghton PR 1192 Petroleum Base
80-120 normal
140 max
What is the purpose of the masker emitter belts and where are they located?
They mask the acoustic signature of the ships and are located forward of main machinery spaces on the ship.
What are the rules for diving on an active suction?
Considered an emergency repair and is authorized by the CO or both RA and tended vessels.
What are the stave bearings made out of?
Synthetic rubber strips, either metallic backed (class I) or non-metallic backed (class III)
What DDG’s are honored in NSE?
SAMSON KIDD RALPH JOHNSON MOMSEN GRIDLEY
What are the requirements of splashing standby diver as a working diver?
- No-D dive of 60’ or less
- Same job and location
- The work area shall be determined to be free of hazards by red diver
- UWSH or UCT work. Salvage not authorized.
- The standby diver may deploy outside an enclosed or confined space to tend the working divers.
What chapter is seachest repairs in?
S0600-AA-PRO-150 UWSH Manual Chapter 15 protection sleeves and seachests
What is the difference between summer and winter bintsuke?
More tallow and rosin
How do you know the ICCP is active?
The reference cell will be emitting small bubbles
What are the types of underwater welding used in Navy Diving?
Shielded Metal Arc
What stave bearing jobs are performed on surface ships?
Level 2 Gross damage and fouling inspection, removal and installing, cleaning
What are the two grades of foam we use for cofferdams?
Type 1: 35 feet or shallower
Type 2: 36 feet or deeper
What is a SPM propellor called?
Cortnozzle
Explain the paint deterioration scale?
Paint Deterioration Rate (PDR) scale is a rating system of paint deterioration from 10-100 in increments of 10
What is the Rupert Scale and how is it used in comparing roughness?
Used to measure the roughness of the propeller after cleaning and polishing. The diver compares the blade roughness with with his hand until a match is made.
What is the difference between full hull cleaning and interim cleaning?
Full cleaning is the entire hull and interim cleaning refers to the cleaning of propellers, shafts and portions of the hull (running gear)
What is a GFI?
Ground Fault Interrupt
When is a GFI required?
When line voltage is above 7.5 VAC or 30 VDC
What are the UWSH Chapters?
- Propellers
- Auxiliary Propulsion Unit
- Masker Emitter Belt
- NDT
- Secondary Propulsion Motor
- Sonar Domes
- Diver Tools
- Controllable Pitch Propellers
- Shaft Lamination
- Protection Sleeves
- Cofferdams
- Inspections
- Propulsion Bearings
- ICCP
- Painting and Fairing Compounds
- Fin Stabilizer
- Pollution Prevention
- Sub Procedures
What are the 3 types of props?
- Solid (monobloc)
- Built-Up
- CPP
What is an APU?
Auxiliary Propulsion Unit
What is a SPM and what is it used for?
Secondary Propulsion Motor
Fine movements
Max Protrusion of DC Plugs?
3-4 inches
What is a cofferdam?
Any plug, patch or dry chamber installed externally to the hull of the ship or sub below the waterline.
What is DFT?
Dry Film Thickness
What are 3 types of rudders?
- Balanced
- Semi-Balanced
- Non-Balanced
What are 6 types of anchors?
- NAVMOOR
- STATO
- EELLS
- LWT
- DANFORTH
- NAVY STOCKLESS
What FR constitutes a prop cleaning?
FR 30
