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UWSH
General/misc knowledge
| Question | Answer |
|---|---|
| What is Underwater Ship's Husbandry | Inspection, maintenance, repair of Navy hulls and appendages while the hulls are waterborne |
| Primary goal of UWSH | Provide a permanent repair without dry-docking the ship. If this is not possible, then temporary repairs allowing the ship to operate until it can be dry-docked. |
| Berthing requirements | 20' from pier (Carriers) 4' from pier (all others) 6' from keel to bottom (when diving below bilge keel or max beam on subs) |
| Rules for deploying standby as working diver | 1. Ship's Husbandry or UCT, not for salvage 2. surface-supplied, No-D, 60fsw or less 3. Same job/location as other diver(s) 4. Work area determined free of hazards by first diver --May deploy outside confined space to tend working divers |
| 50 ft rule | -Diving within 50 ft of active suction (same side of keel) maintaining suction of 50gpm or more not authorized unless as emergent repair. -Requires authorization from CO of tended vessel and repair activity -Divers briefed on location of suctions, |
| Dive Sup shall determine if sea suction is a safety hazard prior to dives when... | -Maintaining less than 50gpm and less than 50 ft away from dive site -Maintaining 50gpm or more, less than 50 ft away, but on opposite side of keel |
| Enclosed space requirements | -EGS, ORM -Tended by another diver outside the space (except ballast tanks) -Number of tending divers depends on situation and supervisor/planners |
| 3 Requirements for diving on ships in a nest | 1. Outboard ship must fly code Alpha 2. All suction within 50 ft path of divers tagged out on both ships 3. Both ships pass the word that divers are in the water |
| Diving within ____ of active ICCP system requires________ and __________. | -15 ft -wearing full dry suit, unisuit, or wet suit with hood and gloves -maintaining clear comms among divers, topside, and inboard ship's force personnel |
| Diving within active sonar Dive Manual Appendix | 1A |
| Diver dress/unkown sonar distance requirements | -wet-suit hooded/start at 600yds, move in to diver comfort -wet-suit unhooded/start at 1000yds, move in to diver comfort -helmeted/start at 3000yds, move in to diver comfort |
| Requirements for diving at night | 1. Notify Port ops due to sonar testing (1800) 2. Ship lights: red-white-red |
| OOC 3 | Diving |
| OOC 4 | Certification |
| OOC 5 | Ship's Husbandry |
| OOC 25 | Environmental |
| UWSH Chapters: CH 3 - 10 | 1. Index and User Guide 2. General info/Safety 3. Propellers 4. Auxillary Propulsion Unit 5. Masker Emitter Belts 6. Submarine Sonar Systems 7. Non-Destructive Testing 8. Secondary Propulsion Motor 9. Sonar Rubber Domes 10. Diver Tools |
| UWSH Chapters: CH 11- 20 | 11. Wet/Dry Chamber Welding 12. Controllable Pitch Propellers 13. Shaft Laminations 14. CSA Pods 15. Protection Sleeves 16. Cofferdams 17. Inspections 18. Propulsion Bearings 19. Cathodic Protection 20. Painting/Fairing Compounds |
| UWSH Chapters: CH 23-31 | 23. Submarine Pre-Deployment Noise Inspection 24. Fin Stabilizers 25. WSQ-9 System 26. Underwater Cutting of Special Hull Treatment 27. Hydroblast 28. Pollution Prevention 29. Submarine Procedures 31. Rudders |
| Underwater Ship's Husbandry Manual Code | S0600-AA-PRO-##0 (## corresponds to the specific chapter) |
| Which ships have fin stabilizers and why? | FFG Help counter the ship's roll (LCS and some patrol craft have similar versions) |
| What type of running gear does a CVN have? | 2 Semi Balanced Rudders 4 Mono Bloc (solid) propeller Because they are stronger for the large size of the carrier |
| Purpose of Skeg | Hydrodynamics Additional Shaft support |
| Purpose of transducer | transmitting sound pulses through the water and listening for returning echoes that suggest the presence of enemy targets. |
| Which ships have 2 masker emitter belts? | FFG7 Perry |
| Which ships have 3 masker emitter belts? | DDG51 Arleigh Burke |
| Which ships have 4 masker emitter belts? | DD963 Spruance, CG47 Ticonderoga |
| Which side of carrier has quarterdeck? Which side has discharge? | QD - Starboard Discharge - Port |
| Which ships have CPP How many blades do they have? | FFG7, DDGs, CGs, 5 blades |
| Which ships have bow thrusters? | FFG LCS |
| Explain a common suction | Multiple pumps or systems taking suction from a single intake point. |
| What cofferdam is installed inside a scoop on an LCS? | Zinc necklace cofferdam |
| Example of level 2 inspection | APU inspection Rodmeter inspection |
| How much does a rod meter weigh? | 71 lbs on surface 60lbs in water |
| Minimum thickness of wire rope for belly bands | 3/8” |
| What is the radcon boundary for a CVN? | frame 80-180 |
| What is unique about all patches on carriers? | They all have attachments for eductors |
| Which side is a carrier moored up on? Why? | STBD Quarterdeck/brow is on starboard intake is on stbd, radioactive discharge is on port side |
| What is a bilge keel used for with regard to diving? | -Attaching belly bands with c-clamp -Definable keel |
| Which ships have bow thrusters? | FFG LCS |
| Berthing requirements breakdown: -Cleaning -Fin stabilizers -SRD | cleaning/painting: 4ft from pier (20 carriers)-6 ft below keel @ MLW(or max beam subs) Fin stabilizers: defective fin inboard, 15 ft from pier, 25ft below keel (11 ft minimum) SRD - 10 ft below lowest part of dome, 100 ft of pier space for equipment |
| Berthing requirements breakdown: -Propellers -CPP -Sub anchor | Propellers - 10 ft below max draft at stern, ship breasted out to make room for boat/equipment CPP - same as props, max 1 degree list, minimum trim Aub anchor - port side to pier, min. 10 ft below MBT 4B |
| 6 types of anchors | STATO EELLS NAVMOOR Danforth LWT Navy Stockless |
| What is a rodmeter called on an LCS? | Navanot |
| What is a rudder post wrap? | Fat rope with bintsuke around rudder post Similar to stern tube seal fat rope |
| Smallest allowable vent hole for eductor? | 1/2" |
| Which part of shackle determines its sizing? | The diameter of the bow (top U-shaped part) |
| Requirements for rodmeter change | -24hrs Gas free -New pitsword on stby -Top hat on stby -Single valve requirements (chit) -positive comms -DC plug (sometimes if needed to quickly return to double valve) |
| Where are shaft key(s) located? | On shaft at 12 o'clock (sometimes 2, one on 12 and one on 6 o'clock) |
| Minimum clearance needed for doghouse installation | 26" between shaft and hull |
| Lowest temp allowed for shaft lam job What is ideal temp? | 60F 73F |
| FR typically very high on which parts? | Keel blocks |
| 3 Types of hull cleaning | Full - everything Partial - zones (thirds, etc. ) Interim - running gear (in between full cleanings) |
| Hull/appendage cleaning priorities in order | 1. Running gear 2. FWD 1/3 3. Aft 2/3 |
| Epoxy and fairing compound mix ratios: HP-2 Hycote 461 Splash Zone Masker Belt fairing | HP-2 Elastolock - 7:1 Hycote 461 - 3.2:1 Splash Zone 1:1 (hardener:epoxy) Epoxy for emitter belts 1:1 |
| Paint Life: -Ablative -non-ablative | 5-7 years 2-7years |
| Tags on carrier are run through who? | Diving Officer |
| Which ships do not have sonar? | Amphibs: LHA/LHD, LPD, LSD etc. |
| What is the only FFG with ICCP? | USS Osmond Ingraham |
| What is small stuff? | Line under 1 3/4" in circumference |
| Why is nitrogen used to dewater rudders? | because it is a dry, inert gas |
| How are carrier propellers numbered as you're looking at them from behind the ship? | 1,2,3,4 going from STBD to Port side |
| Which carrier reactors power which props? Why are they configured that way? | Reactor 1 - props 1 + 3 Reactor 2 - props 2 + 4 -So that if one reactor goes down, the ship can still be steered normally |
| Main circs are on which ships? | CVN, LCS |
| Relative size of three components in main circs? | Scoop - biggest Suction - middle Discharge - smallest |
| Main Circs: frequent jobs | -Check waster sleeve -check door gaps -Put on zinc necklace cofferdam |
| Which types of submarines are the ones in SD/Point Loma? | SSN 688 Los Angeles |
| What is the purpose of a bubble guard on a sub? Where are they mostly located? | reduce noise in front of fwd ballast tanks |
| Safety program for submarines | SUBSAFE |
| DC plug is used for which type of rodmeter to reestablish double valve? | fixed |
| which type of rodmeter uses an external top hat cofferdam that is educted? | Retractable |
| 2 barriers inside stern tube? | Inflatable boot Cintron seal |
| Purpose of a ship's SKEG What is it filled with? | Hydrodynamics, additional shaft support preservative *protects running gear/ship if it scrapes the bottom or runs aground |
| Minimum patch extension beyond an opening? | 3" on all sides |
| What to do when installing a rodmeter with an internal top hat? | vent top hat, then stick rodmeter with o-ring into hole. Correct orientation is when circular mark is toward topside |
| Replace sacrificial anodes when... | More than 50% deterioration Inactive anodes Cannot read lettering anymore |
| How many main circs per reactor on a carrier? | 2 |
| What is the patch called to float a rodmeter? | cat-eye |
| Butterworth Zero Thrust Hydroblast gun max use time per diver | 85 min in a 24 hr period (due to noise hazard) |
| -What makes the Butterworth Zero Thrust Hydroblast gun zero thrust? -What to make sure of | -Shoots water jet out the front and back simultaneously -Ensure back-blast does not hit other diver or umbilical |
| Rupert Scale Measures what? how many parts to scale | Roughness of propeller surface 6 (A-F) |
| When is cofferdam used on a sonar dome | temp below 60F high turbidity/low vis |
| Rodmeter Inspection steps ( 5) | 1. Clean with greenie weenie 2. check fiber glass 3. check sensor 4. If retractable, check operation 5. Take before/after pics |
| Belly bands can be attached to... (5) | battle bars rat holes chocks bitts bilge keel with c -clamp |
| Two types of sonar dome inspections | wet - use fres water, look for turbidity or bubbles in dome dry - pressurize with air (takes a long time), check for bubbles coming out |
| What are the cpp blade clips called on 3 point fixtures? | tacos |
| basic walkthrough of zinc necklace cofferdam | 2 piece flat patch/strong-back installed in bucket Swim into scoop, install clamshell patch tighten all bolts around patch to "squeeze out" foam around egdes to get a good seal |
| Plywood patches are used for what types of jobs? Why? | emergent cannot get certified |
| Sub cofferdam materials | 1/8" 5000 series AL 16 gauge stainless steel |
| What to check on an eductor hose? | -Date of last hydro test attached to tag -Turn over the end of hose and listen for check valve to drop |
| What is the sonar dome called on a carrier? | WAKY 2 |
Created by:
DivingKnowledge