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Defender Inflatables – Operation, Maintenance & Warranty Manual 

Page 6 of 16 

 

 

 

Insert the provided pump adapter into valve by 

pushing and twisting slightly. The pump 

adapter will fit snugly in the valve. 

 

Put enough air in the boat to give the boat 

some form. 

 NOTE

 

All chambers should be inflated equally to avoid 

damage to the baffles that separate the 

chambers. 

2.3.1 

Order of inflation: 

Inflate the boat in the following order if it is not 

written on a tag near the valves:  

1. Front chambers (if applicable) 

2. Side chambers 

3. Floor chamber (if applicable) 

4. Keel chamber (if applicable). Always inflate the 

keel chamber last. 

 

2.3.2 Inflation 

 NOTE

 

Do not use mechanical compressors to inflate 

your boat. The pump that is delivered gives 

exactly the right pressure to your boat. 

Step 

1

: Inflate each chamber in the order of 

inflation, put in enough pressure to allow the boat 

to spread out, but do not fully inflate the tube. 

Step 

2

: Following the order of inflation, top off the 

tubes to their recommended PSI. 

If inflation is done in right order, the boat has the 

correct pressure and there is 

no distortion of 

fabric near the baffles 

Step

 3: 

Inflation is complete,

 

ensure that all caps

 

are tightly secured as they the final seal in ensuring 

air tightness. 

 

 

 NOTE

 

Never surpass these values! 

Inflate the boat to 0.25 bar = 3.6 PSI  

Inflate the keel to 0.40 bar = 5.8 PSI 

Inflate the Air Floor to 0.76 bar = 11 PSI 

 

2.4  

Floorboard installation 

Instructions to install the floorboards in the 

Defender aluminum floor models (380,430 & 470): 

 

Inflate the tube chambers enough to have some 

shape to the boat. 

 

Make sure that no parts of the tubes are 

sticking together. 

 

Make sure keel is not inflated and valve is 

open.  

 

Place the front section (bow board 1) of the 

floorboard as far in the front of the boat as 

possible. Make sure the hole in the bottom is 

straight above the valve of the keel section. 

 

Place part two into the boat. Line up these two 

sections of the floorboard so they are straight. 

 

Take part three and eventually part four of the 

floorboard and make a “bridge” with part two 

and three. 

 
 
 
 
 
 
 
 
 
 
 
 

 

 

Push down the two parts to the bottom of the 

boat. 

 

Deflate the side-tubes of the boat completely 

and install the aluminum stringers.  

 

 

With more than 3 floorboards make a bridge 

between the second and third floorboard seen from 

the transom. Floorboards are numbered from the 

bow. 

 

 NOTE

 

Over-inflation 

can damage your boat. Avoid 

direct sunlight 

when the boat is not in the 

water

. This might heat the air in the boat so much 

that expansion causes damage.  

Part 1 

Part 2 

Part 3 

Defender Inflatables – Operation, Maintenance & Warranty Manual 

Page 7 of 16 

Installation of the aluminum stringer  

After installation of the floorboards, put the 

stringers in the sides of the floor. 

 
 
 
 
 
 

 

 To install the stringers easier, it is recommended 

to put a paddle or similar sized item under the 

bottom of the boat. 

 

This lifts the floorboards up to have easier access to 

put the stringers on the sides of the floor. 

 

2.5 

Rowing equipment 

Defender Recreational Inflatable boats come 

standard with paddles or with oars, oarlocks, and a 

rowing seat. 

 

Ensure seat is properly installed (section 3.3). 

 

To install the oars in the oarlocks, put the oars 

over the oarlock pins. 

 

To prevent loss of the oars, be sure to put the 

cap on the oarlock. 

 

If the oars are not in use, put the oars in the 

clips on the sides of the boat. 

 Local water conditions must be taken into 

account before operating boat with oars or a small 

outboard. Boat power may not be strong enough to 

overcome currents in tidal inlets, open seas, small 

channels, or shallows of shoal water regions. 

2.6 Deflation 

General information: 

 NOTE

 

Boat should be clean and dry before rolling up for 

storage.  Remove any sand and debris that may 

cling to the fabric. 

 

When deflating the boat, deflate all chambers 

evenly; this prevents damage to the baffles in the 

boat.  

 

 

To deflate the boat: 

 

Put your finger in the valve and turn ¼ turn 

(See for operation of the valves section 2.2 

“the valves”). 

 

Release the air from all chambers. 

 

Make sure the inside of the valve stays open, 

so air can evacuate during folding. 

 

Push evenly on the whole boat to let as much 

air out as possible. 

 

 

 

2.7 

Folding the boat 

 

Remove seat / oars. 

 

Take out the floorboards. 

 

Fold the boat to the middle of the boat, so that 

the whole boat is as wide as the transom. 

 

 

 

 

Bring the cones at the back of the side 

chambers to the middle of the transom.

 

 

 

 

Roll the transom forward. This helps to get the 

air out. Be sure all valves are in the open 

position. 

 

Folded this way the boat fits in the delivered 

pack (sack) for transportation. 

2.8 Transportation 
2.8.1 

Lifting the boat out of the water 

Make sure there are no sharp objects around the 

spot where you want to place the boat. 

Use the handgrips for lifting instead of the safety 

ropes.  

Do not lift by the lifelines.

 

www.defender.com 

Page 7

Summary of Contents for 380

Page 1: ...Defender Inflatables Operation Maintenance Warranty Manual Defender RIB 265 300 Defender 380 430 470 Defender RIB 430 460 ...

Page 2: ...able 8 2 8 2 2 Towing of a RIB 8 Page Contents 3 Safety and operation information 3 0 Important safety information 9 3 1 Pre operating checklist 10 3 2 Stability and buoyancy 10 3 2 1 Position of persons and luggage 10 3 2 2 Rowing 10 3 2 3 Under engine power 10 3 3 Hazards 12 4 Maintenance 4 0 General maintenance 13 4 1 Repairs 14 4 1 1 Small repairs 14 4 1 2 Air leak in tube by cut 14 4 2 Winter...

Page 3: ...tion that will occur over time and as a result of heavy use misuse or negligence of the craft Any craft no matter how well built and strong can be severely damaged if not used properly Improper boat handling is also unsafe for other boaters Always adjust the speed and direction of the craft to sea conditions The craft should have onboard the appropriate USCG required safety equipment lifejackets f...

Page 4: ...wn overboard or into the boat Never be under the influence of alcohol or drugs while boating it is the law Alcohol or drug use impairs your judgment and greatly reduces your ability to react quickly Prepare other boat operators Instruct at least one other person on board in the basics of starting and operating the outboard and boat handling in case the driver becomes disabled or falls overboard Pa...

Page 5: ...ey in a clockwise position to tighten the valve If this does not stop the air loss turn counterclockwise to remove valve Inspect the valve for damage dirt or grit Reinsert valve into valve nut and tighten If air leakage persists contact Defender Industries for assistance Tel 800 628 8225 Often we can troubleshoot valve issues over the phone or by shipping you a new air valve Valves should be routi...

Page 6: ...ghtly secured as they the final seal in ensuring air tightness NOTE Never surpass these values Inflate the boat to 0 25 bar 3 6 PSI Inflate the keel to 0 40 bar 5 8 PSI Inflate the Air Floor to 0 76 bar 11 PSI 2 4 Floorboard installation Instructions to install the floorboards in the Defender aluminum floor models 380 430 470 Inflate the tube chambers enough to have some shape to the boat Make sur...

Page 7: ...egions 2 6 Deflation General information NOTE Boat should be clean and dry before rolling up for storage Remove any sand and debris that may cling to the fabric When deflating the boat deflate all chambers evenly this prevents damage to the baffles in the boat To deflate the boat Put your finger in the valve and turn turn See for operation of the valves section 2 2 the valves Release the air from ...

Page 8: ...nsafe speed may void your warranty 2 8 2 1 Towing of an inflatable NOTE IMPORTANT The bow lift handle should never be used for towing Use the port and starboard D rings for towing Towing this way makes the boat steady and secure behind the towing boat and helps to avoid damage to your Defender Inflatable boat Attach the towing ropes as in the following scheme Attach a line between the towing rings...

Page 9: ...ck of the seat or gunwale at planing speeds standing at planing speeds sitting on elevated fishing boat decks operating at planing speeds in shallow or obstacle infested waters releasing your grip on a steering wheel or tiller handle that is pulling in one direction drinking alcohol or consuming drugs or daring high speed boat maneuvers While activation of the lanyard stop switch will stop the eng...

Page 10: ...oard and readily accessible Check that the oars or paddles are in the boat in case of engine trouble Operator knows safe navigation boating and operating procedures A ring type life buoy or buoyant cushion designed to be thrown to a person in the water Arrange passengers and load in the boat so that the weight is distributed evenly and everyone is seated in a proper seat or on the floor Instruct a...

Page 11: ...for an instant This will bring the boat to a nearly instantaneous stop and can send the occupants flying forward The boat may also steer sharply to one side When accelerating with the boat the bow can make an upward movement This might limit the sight of the helmsman temporarily When the speed of the boat increases the boat will come on plane and return to a level position again If the wind blows ...

Page 12: ...ure Your Defender Inflatable boat is designed with more than one air chamber In the event of a puncture in one chamber the boat will retain at least 50 of its buoyancy Shift the load in the craft to the opposite side Secure the leaking chamber as necessary by tying up or holding up and immediately proceed to the nearest shore or mother ship whichever is nearest However be careful about shallows or...

Page 13: ...ard engine when people are swimming close to your boat The propeller can be extremely dangerous to anyone or anything in the water Stop the outboard motor immediately if you spot swimmers in the vicinity of your boat 4 Maintenance 4 0 General maintenance Cleaning agents Household cleaners should be used sparingly and not discharged into waterways Never mix cleaners and be sure to use plenty of ven...

Page 14: ...er the damaged area and trace with a pencil the outline of the patch If the fabric of your boat is CSM you have to buff roughen with sandpaper the patch area on the boat as well as the backside of the patch PVC need not be buffed for repair Use care when sanding the surface around the puncture and the patch Lightly scuff with the sandpaper evenly Avoid sanding so roughly that the thread of the fab...

Page 15: ...oat during storage 5 If you store your boat for a longer period do not keep the boat in the delivered factory carton The boat is folded tightly in the original shipping package which gives sharp folds in the material Roll or fold up the boat loosely and store it on a dry place away from rodents or pests that can damage the fabric To avoid damaging the boat during storage do not place heavy objects...

Page 16: ...preparing for racing or other competitive activity G Acts of God including but not limited to abnormal water wind or weather conditions etc H Damages or corrosion due to lack of maintenance or premature wearing resulting from improper assembly over under inflation etc I Operation of product in a manner that is contrary to this manual or in violation of federal or state laws III This warranty does ...

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