25’ RB-S Study Guide
Courtesy of BM David Race

Compiled January 2006

by: BM2 D. Race

USCG STA Ponce de Leon, Fl

GENERAL CHARACTERISTICS
DCOHB / Defender Class Operator’s Handbook
HULL CONSTRUCTION / 5086 Marine Aluminum
CABIN/ SUPERSTRUCTURE CONSTRUCTION MATERIAL / 5052 Marine Aluminum
HIGHEST FIXED POINT / 8ft 9 in (top of Radome)
HIGHEST UNFIXED POINT / 11ft 5 ½ in (VHF-FM antenna- not in DCOHB)
LENGTH / 29 ft 6 ½ in (bow to lowered taffrail)
BEAM / 8 ft 6 in (including collar)
SPECIFIC FRAMING SYSTEM / Herring Bone (aft to fwd)
FREEBOARD (bow) / 3 ft 5 in (not in DCOHB)
FREEBOARD (lowest point/ recovery well) / 1 ft (not in DCOHB)
FULL LOAD DISPLACEMENT / 9,450 lbs
DRAFT / 3 ft 3 in (DIW w/ engines trimmed full down)
POINT OF DEEPEST DRAFT / Lower units (step of vsl if trimmed full up)
WATERTIGHT COMPARTMENTS / None
WEATHERTIGHT COMPARTMENTS / One (passenger compartment)
WATERTIGHT HATCHES / None
WEATHERTIGHT HATCHES / Four (fwd, aft, port, and stbd cabin doors)
MAXIMUM SPEED / 46 knots (6000 rpm)
CRUSING SPEED / 35 knots (4800 rpm- trim adjusted)
MAXIMUMRANGE (cruising speed) / 150 NM
MAXIMUM OPERATING DISTANCE OFFSHORE / 10 NM
MINIMUM CREW / 3 qualified
MAXIMUM PASSENGERS / 6 (10 total w/ crew)
MAXIMUM ENDURANCE (crusing speed) / 4.25 hours at cruise (estimated – not in DCOHB)
MAXIMUMSEAS / 6 ft
MAXIMUM SURF/ BAR CONDITIONS / None
MAXIMUM WINDS / 25 knots
MAXIMUM TOW (displacement tons) / 10 displacement tons
ICEBREAKING CAPABILITIES / None
ENGINE MODEL / Honda BF-225-A (twin)
ENGINE HORSEPOWER / 225 hp/ ea
ENGINE IDLE / 650 +/- 50 RPMs
ENGINE SHAFT ROTATION / Counter rotating
MAXIMUM SHAFT RPM / 6000 rpm
ENGINE ALARM LIGHT(S) LOCATION / Next to ignition keys- stbd console
EMERGENCY KILL-SWITCH LOCATION / Next to ignition keys- stbd console
FUEL TYPE / Unleaded gasoline (86 octane or higher)
MAXIMUM FUEL CAPACITY / 105 gallons
USABLE FUEL CAPACITY / 100 gallons (95%) NOTE: @86gallons= empty
LUBE OIL CAPACITY (per engine) / 8 quarts per engine
ENGINE COOLING SYSTEM / Forced water circulation w/impeller & thermostat
FORWARD/ REVERSE GEAR RATIO / 1:1 fwd/ 1:1 reverse
PROPS (model/blades/dia/pitch) / 14 x 19 (4-bladed) SS Mecury Vensura series
LOCATION OF INSTALLED BILGE PUMP / Crew compartment under stbd aft passenger seat
BILGE PUMP (wired to 12 volt system via 40 amp breaker) / 1100 gph/ 18.3 gpm
BATTERIES / Three (port,house,stbd) Optima Blue- Top Gel Cell Batteries
OVERHEATING INDICATOR / RED light will come on, engine will gradually reduce to approximately 1800 RPM and engine will stop after 20 seconds. Indicator is activated via the engine control moduel(ECM) by two overheat sensors mounted on the engine.
WATER PRESSURE / Minimum 5PSI to 12PSI
OIL PRESSURE / Less than 23psi AT 1800rpm, the GREEN light will go off, ECM will gradually reduce speed, stop engine and check and service the oil level, restart engine, the GREEN light should come on within 30 seconds and throttle operation should be normal. If the light remains off the RPM will not increase with throttle movement.
ALTERNATOR INDICATOR / RED light, each alternator is rated at 12 VDC, 60 amp at 2300 RPM and produces 48 amps of power at 1000RPM. Belt driven and protected by a 150-amp fuse, located in the fuse case mounted on the engine
PROGRAMMED FUEL INJECTION INDICATOR / RED light when ECM senses an abnormality from one of the nine engine-mounted sensors
TRIM TILT INDICATORS / Have a range of -4 to 16degrees
VOLTS / Minimum voltage indicated should be 12.7 volts

CONSTRUCTION & DESIGN

DECK DRAINS / 6 – 2fwd cabin deck drains, 2 aft weather deck drains, 2 aft well deck drains
DECK SCUPPERS / 4- 2 fwd cabin deck scuppers, 2 aft weather deck scuppers
COMPATIBLE W/ C-130 / Not to exceed 25 ft in length
MAXIMUM BEAM / 8.5 ft (legal trailer in all states)
BOTTOM PLATING / ¼ in
SIDE PLATING / 3/16 in
MONO-HULL / Deep-V planning hull
BEACHING PLATE / Additional ¼ in of 5086 Aluminum, welded to keel, along the forefoot
STRAKES / Three custom lifting strakes on each side of the bottom hull to improve: Sea keeping, Directional Stability, Planing Performance
PERFORMANCE FIN / Provides lift upon acceleration, creates vacuum for stabilixation during turning
CABIN/ HOUSE PLATE / 5052 Alloy
INTERNAL HULL / From deck down is a watertight chamber (5052 Marine Aluminum)
FRAMES / 6061 Marine Aluminum, tack welded to hull, Frames are 100% welded to each other
SLIP RATIO / 2.76% slip ratio
SPEED SHOE / Provides larger planning surface, allows boat to plane faster

TRAILERING

TRAILER / EZ- Loader
HITCH / Class V, 5,000-15,000lbs must be rated at a minimum of 10,000lbs
BALL / 2 5/16’’ rated for 10,000lbs, and 1,000lb tongue weight
RB-SON TRAILER / Top of Nav Mast 11ft 1.5in
Top of Radome 10ft 8.5in (w/ new radial tires 11ft)
Top of Spotlight 9ft 1.0in
Top of Pilothouse 8ft 8.0in
Beam 8ft 6.0in
Trailered Length 37ft

BECCE’S

ENGINE FIRE /
  1. Reduce RPMs to NEUTRAL on both engines, and then secure
  2. Notify crew of casualty
  3. Crewmember check outboard engine to assess situation
  4. Contact and inform Unit of situation and current position
  5. Secure electrical power
  6. On coxswain command, crewman combat fire using portable fire extinguisher(s)
  7. Crewmember rig the anchor, if needed
  8. Discuss abandon boat options

LOSS OF STEERING /
  1. Reduce RPMs on both engines
  2. Notify crew of casualty
  3. Verify current position and evaluate situation
  4. Coxswain steer with engines, if possible
  5. Crewmember investigate casualty
  6. Crewmember rig anchor, if needed
  7. Place engines in NEUTRAL
  8. Attempts made to repair steering system
  9. Test engines for complete range of motion
  10. Engage engines separately
  11. Keep RPMs at minimum speed
  12. Notify Unit

COLLISION W/ SUBMERGED OBJECT /
  1. Reduce RPMs to NEUTRAL on both engines
  2. Notify crew of casualty
  3. Coxswain verify position
  4. Crewmember check all other compartments for flooding
  5. Take appropriate measure to reduce flooding, if applicable
  6. Engage engines at various speeds to check for vibration.
  7. Notify Unit of situation

LOSS OF LUBE OIL PRESSURE /
  1. Reduce RPMs to clutch ahead on both engines
  2. Identify affected engine
  3. Notify crew of casualty
  4. Secure affected engine(s)
  5. Verify current position and evaluate situation
  6. Crewmember check outboard engine and assess the situation
  7. Crewmember rig anchor, if needed
  8. Fire extinguishers O/S
  9. Check engine compartment area for lube oil
  10. Check lube oil for quality and quantity
  11. Notify Unit
  12. Return to unit if cause cannot be determined or repaired

HIGH WATER TEMPERATURE /
  1. Reduce RPMs to CLUTCH ahead on both engines
  2. Identify affected engine(s)
  3. Notify crew of casualty
  4. Verify current position and evaluate situation
  5. Secure engine, if temperature continues to rise
  6. Check overboard discharge
  7. Crewmember check outboard engine to assess the situation
  8. Crewmember rig anchor, if necessary
  9. Outboard cooling water intake ports checked
  10. Notify Unit

LOSS OF FUEL PRESSURE /
  1. Reduce RPMs on both engines to CLUTCH ahead
  2. Check fuel gauge
  3. Identify affected engine
  4. Notify crew of casualty
  5. Verify current position and evaluate situation
  6. Crewmember rig anchor, if directed by coxswain
  7. Check bilges
  8. Check primary fuel filters
  9. Check entire fuel system for leaks
  10. Check governor and linkage
  11. Identify and correct source of problem or request additional assistance from Unit

DISCREPANCIES
MAJOR DISCREPANCY / Discrepancies which degrade the effectiveness of the boat to perform one or more missions. Major discrepancies are divided into 5 categories-
ENGINE AND BOAT SYSTEMS / -Electric cabin dewatering pump hose missing hose clamps
-Loose/ missing fittings, nuts, bolts, brackets, etc.
-Loose/ missing hardware on the engines used for attaching accessories and sensors
-Battery terminals loose or corroded
-Engine control cables loose
-Fluid levels below minimum required
-Charging system faulty or inoperative
-Any standard boat machinery, with exception of those listed on the disabling or restrictive list, not operating properly
BOAT OUTFIT / -Life ring and/or distress light missing/ unserviceable
-Missing seat belts
ELECTRONICS/ NAVIGATION / -Compass light inoperative
-Expired deviation table
-Any standard boat electronics, with the exception of those listed on the restrictive or disabling casualty list, not operating properly
GENERAL MATERIAL AND SAFETY / -Watertight integrity
-Improperly repaired, altered, or damaged hull or collar
-Damage to folding radar pod
-Any standard boat machinery, with the exception of those listed on the restrictive or disabling casualty list, not operating properly
TRAILER / -Loose, missing, or improper hardware
-Brake fluid level low
-Non-standard tie-down straps
RESTRICTIVE DISCREPANCIES / -Discrepancies which restrict the operations of the boat such that it can perform some missions, but not all missions safely, divided into 5 categories
ENGINE AND BOAT SYSTEMS / -Engine performance: minimum RPM of 4400 for two minutes
-Leaks more than 15 drops per minute
-Outboard cooling water components
-Outboard engine lubrication system components
-Steering actuator helm pump, hoses or fittings
-Diesel fuel
ENGINEERING SYSTEM COMPONENTS / -Electric cabin dewatering pump inoperative
ELECTRONICS/ NAVIGATION / -Navigation lights inoperative or displaying improper characteristics
-Depth sounder inoperative
-GPS inoperative
-Radar inoperative
-Magnetic compass affected as described below: Deviation table missing
-Compass deviation greater than 5 degrees
-Electronics: One VHF transceiver inoperative
GENERAL MATERIAL AND SAFETY / -Watertight integrity: Holes/ cracks in the hull above the waterline
-Damage to the collar that removes the polyurethane coating or exposes interior foam
-Personal survival vest missing or unserviceable (4 on-board)
-One portable fire extinguisher missing or unserviceable
TRAILER / -Missing or flat, improper size, damaged, or worn tires
-Trailer running lights inoperative or wrong characteristic
-Brake actuator or back-up solenoid inoperative or no fluid
-Wheel bearings or brakes have excessive noise or play
-Structural cracks
-Missing safety chains or brake emergency chain
-Emergency brake latch fails to operate
-Missing tie down straps (6 required/ NOT including winch strap)
DISABLING CASUALTIES / -Casualties which make the boat not serviceable
-The operational commander may authorize, in writing, the movement of the boat (for short distances) under its own power only to facilitate haul-outs or corrective maintenance. Divided into 5 categories
ENGINE PARAMETERS / -Engine Lube Oil Pressure: Green engine oil pressure light extinguishes on ignition panel, engine RPM is automatically limited to 1800 RPM
-Engine Cooling Water: Red overheating indicator lihjt illuminates on the ignition panel, or audible alarm sounds, engine RPM is automatically limited to 1800 RPM. If condition continues for another 20 seconds, the engine automatically shuts down
ENGINEERING SYSTEM COMPONENTS / -Engine fails to start
-Uncontrollable overheating
-Inoperative visual or audible alarms
-Metallic/ non-metallic noise: metal-on-metal, fuel-knock, bearing, clicking
-Excessive engine vibration
-Any fuel (gasoline) system or engine component leaking or dripping fuel
-Engine surging/ over speed (over 50RPM)
-Engine over speed (over 6000RPM)
-Loss of engine control
-Continuous electrical breaker trip
-Continuous failure of outboard engine fuses
-Steering system inoperative
-Engine mount hardware loose or missing
-Loose/ missing propeller coupling nut
-Loose/ missing engine control hardware
-Loose/ missing steering actuator hardware
ELECTRONICS/ NAVIGATION / -No electrical means of signaling distress (ie., no radio, EPIRB not installed or unserviceable, etc.)
-12 volt system will not energize
SAFETY / -Truck and complete hitch system not rated to 10,000lbs minimum, rating must be marked by stencil/sticker/stamp
-Electrical “arcing and sparking”
-Odor of insulation overheating
-No portable fire extinguishers (unserviceable)
-No spare engine kill switch activation clip and lanyard available
-Radar pod securing hardware loose/ missing
GENERAL MATERIAL / -Hull breach below the waterline
-Crack in transom plate
-Disabling casualties shall be reported to the operational commander by the most expeditious means; followed by a boat status message as soon as possible, but no later than 12 hours after the casualty is discovered. The boat shall immediately be placed in Charlie status and repaired. If the casualty cannot be repaired within 48 hrs, a CASREP shall be sent within 24 hrs of the casualty.
BOAT OUTFIT LIST

RB-S Outfit List and Stowage Plan

Item /
Part Number
/ Quantity
Anchor/Ammunition Locker
Fortress 7- Pound Anchor / FX11 / 1 each
3/8” Galvanized Anchor Shackle WWL-2000 lbs. / 147610 / 3 each
¼”x4’ PVC Coated Anchor Chain
(secured w/ Bungee Cord) / 3112944 / 1 each
Mooring Lines (1 ½” DBN x 25’) / Samson 618032202561 / 2 each
Fenders (5 ½”x 20”) / Polyform G3 / 2 each
Bucket / 1 each
Main Cabin
Forward Compartment (Cuddy Cabin)
Spare Kill Switch Lanyard (stowed in Pouch)
3/16” T-Allen Wrench (stowed in Pouch)
90 Degree Phillips Screwdriver (stowed in Pouch) / Honda 36182-ZV4-000AH / 1 each
1 each
1 each
Fire Extinguisher (Type B-1) / 1 each
Starboard Seats - Forward Section of Storage Compartment
Electronics Operator Manuals / Various / 1 per
Nav Kit Containing:
Briefcase With CG Logo
Charts (as required per AOR)
Pencils
China Markers
Stop Watch
Search Pattern Slide Rule
Parallel Rule
Weems Plotter
Anemometer
Gum Eraser
Pencil Lead Sharpening Pad
Tide Book (pages as required)
Coast Pilot (pages as required)
NAVRULS
Light List (pages as required)
Nautical Slide Rule
Chart One
Note Pad
Flashlight With Red Lens
Compass and Dividers / 8460-01-411-8610
7510-00-323-8788
7530-00-223-7939 / 1 kit
1 each
various
1 min
1 min
1 each
1 each
1 each
1 each
1 each
1 each
1 each
various
various
1 each
various
1 each
1 each
1 each
1 each
Starboard Seats - Center Section of Storage Compartment
EEBDs and CBR Equipment (if equipped) / 4 each
Starboard Seats - Aft Section of Storage Compartment
First Aid Kit / First Aid Pak MSP 50/SBP999 / 1 each
Hand Bilge Pump / Thirsty Mate 118PF / 1 each

Disclaimer: Any study guide may have incorrect information, as everyone is human...including the BMs who've written the study guides (not to mention policy changes). This is why it is critical that you read the appropriate manuals when studying, not just read the study guides. If you find something wrong, notify the study guide author so they can update it and submit a corrected copy. You are responsible for knowing the material, so I encourage you to hit the books first and use the study guides as a companion document to your studying.

CG 25’ RB-S Study Guide
Page 1 of 10

RB-S Outfit List and Stowage Plan, Continued

Item /
Part Number
/ Quantity
Starboard Bulkhead Outboard Coxswain Chair

Binoculars

/ 1 each
Port Seats - Forward Section of Storage Compartment
Batteries (12 Volt Gel Cell) / 3 each
Port Seats - Center Section of Storage Compartment
Spare Parts kit/Tool Bag Containing
Lube Oil 10w/30
Phillips and Slotted Screwdriver
Metric Wrench Set
Pliers
Rags
Hub Kit / 1 each
2 Quarts
1 each
1 each
1 each
Misc
1 each
Port Seats - Aft Section of Storage Compartment

Gear Bag Containing

1 1/2” DBN Skiff hook Line 9’
1 1/2” DBN Towing Bridle 15’
SS Shackles (3/8” and 1/2”)
Mousing Wire Ties
Flashlight (No larger than 2 D cell in size)
Dewatering Pump Tie Down Strap / 1 each
1 each
1 each
4 min.
1 each
2 each
Fenders (5 ½”x 20”) / Polyform G3 / 2 each
Mooring Lines (1 ½” DBN x 25’) / Samson 618032202561 / 2 each
Seat Backs or Bottom Cushions (4)

Boat Crew Survival Vest

/ 4 each
Main Cabin Above Aft Cabin Door
Towing Mast / 1 each
Lightning Rod / 1 each
Aft Cabin Door
Garelick Deluxe Telescoping Boat Hook to 8’ / 55170 / 1 each
Main Deck
24” Throwable Life Ring / Jim Buoy GO-X-24T / 1 each
Life Ring Strobe Light / ACR SM-2 / 1 each
National Ensign / 8345-00-242-2040 / 1 each
CG Ensign / 8345-00-242-0275 / 1 each
Towline 1 ½” DBN (with cover) / Samson 472032006030 / 300 feet
406 MHz Category II EPIRB with GPS / ACR Model 2744 / 1 each
Throw Line Bag (Aft of Port Deck Locker) / 1 each
Port Deck Locker
No Stowage,
(Potential for Damage to Fuel System)
Starboard Deck Locker
Fire Extinguisher (Type B-1) / 1 each

UPDATED: January 2006 BM2 D. RACE