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History of the Half-Ponton Bridge Boat or "Bailey Boat"

Our favorite boat is the Military Ponton Bridge Half Section. They have a Spoon Bow, High Chin, and railing around the exterior for carrying these in combat. These 685 lb aluminum boats were made to link with others and add planking to create bridges across rivers.

These aluminum boat platforms have the roominess and stability to be whatever you want them to be. THEY ARE LITERALLY A BLANK CANVASS and I consider each UgliBoat owner and fabricator to be an artist.

They are built sturdy enough to withstand the rigors of combat, and have proven their metal with anything we have put them to test on.

IF YOU KNOW WHERE ANY OF THESE ARE FOR SALE, PLEASE CONTACT ME AT Greg@UgliBoats.com

We will either buy them from you or post them on this site for you.

SEE BELOW FOR HISTORY AND MILITARY DETAILS


 



The following is directly from the field manual for these Light tactical rafts (LTRs) and bridges :


CHAPTER 7 Half-Ponton:

The aluminum alloy half-ponton has an effective length of 18 feet 6 inches, is 6 feet 8.5 inches wide, and 2 feet 10 inches high. The bow of each half-ponton is raised approximately 7 inches higher than the stem to prevent the ponton from swamping when rafting in swift currents. The half-ponton weighs approximately 650 pounds and has a displacement of 6.25 tons. Two half-pontons are joined stem to stem to form a whole ponton which supports the light floating bridge or raft.


Here are the links for the entire Manual:

MILITARY FLOAT BRIDGING EQUIPMENT

Table of Contents

PREFACE

INDEX

CHAPTER 1 - RIVER CROSSING CONCEPTS
Methods of Crossing Rivers
Selection of Crossing Sites

CHAPTER 2 - WATERMANSHIP AND SAFETY
Watermanship
Safety

CHAPTER 3 - BOATS AND MOTORS
Reconnaissance and Assault Boats
Bridge Erection Boats
Standard Military Outboard Motors

CHAPTER 4 - IMPROVED FLOAT BRIDGE (RIBBON)
Components
Allocation of Ribbon Equipment
Considerations for the Tactical Employment of Ribbon Equipment
General Construction
Ribbon Rafting Operations
Ribbon Bridging Operations
Operational Maintenance

CHAPTER 5 - M4T6 FLOATING BRIDGES AND RAFTS
Components
Allocation of M4T6 Equipment
Transportation and Loading of M4T6
Considerations for Tactical Employment
General Construction
M4T6 Rafting Operations
M4T6 Bridging Operations
Operational Maintenance

CHAPTER 6 - CLASS 60 FLOATING BRIDGE
Components
General Construction
Class 60 Rafting Operations
Class 60 Bridging Operations
Maintenance of Class 60 Rafts and Bridges

CHAPTER 7 - LIGHT TACTICAL RAFTS AND BRIDGES
Components
Allocation
Transportation of LTR
Considerations for the Tactical Employment of LTR
LTR Rafting Operations
LTR Bridging Operations
Maintenance of LTR Equipment

CHAPTER 8 - ANCHORAGE OF FLOATING BRIDGES
Design of Long-Term Anchorage Systems
Types of Anchorage Systems
Design of an Overhead Cable Anchorage System
Installation of an Overhead Cable Anchorage System


CHAPTER 9 - FLOAT BRIDGE PROTECTIVE DEVICES
Types of Protective Devices
Planning Considerations
Construction of Protective Systems


CHAPTER 10 - CONSTRUCTING FIXED SPAN BRIDGES FROM FLOATING EQUIPMENT

Constructing Fixed Spans from M4T6 Equipment
Constructing Fixed Spans from Class 60 Equipment
Fixed Spans Constructed from LTR

APPENDIX A - KNOTS AND LASHINGS

APPENDIX B - AIRLIFT OPERATIONS

APPENDIX C - EXPEDIENT DESIGN OF OVERHEAD ANCHORAGE SYSTEMS

APPENDIX D - EXPEDIENT ANCHORAGES

APPENDIX E - ALUMINUM FLOATING FOOTBRIDGE

APPENDIX F - ACCESS/EGRESS ROADWAY SYSTEM (AERS)

GLOSSARY

REFERENCES

AUTHORIZATION LETTER

Table Of Contents Page

 DISTRIBUTION RESTRICTION: Approved for public release; distribution is unlimited.



SpoonBow High Chin Ponton MILSECS PDF


This document shows the manufacturing processes and quality assurance standards that were established for manufacturing companies that supplied the Ponton Bridge Boat to the military.
Books
The Military Engineer
January 1920 through December 1921


These 1146 pages chronicle two years of articles for military engineers. 


There are several sections of interest that include articles and pictures of ponton bridges.





PDF PAGE 898
Picture of footbridge across Marne built by Yankee Division

PDF PAGES 906-908
Instruction of Engineer Troops in Ponton Bridge Construction

Picture of bridging Heavy Pontoon into position

PDF PAGES 1022-1030
Development of Heavy Ponton Equipage for Increased Army Loads of the Future

This article tested the differences between Wood, Steel and Aluminum Pontons.

Aluminum Pontons excelled in the following categories:   - Lightweight - Resistance to time and elements - Construction approximating boat lines - Immediate availability of service - Ease of loading & unloading - Ease of transporting - Ferrying capacity - Displacement capacity -

PDF PAGES 1068-1073

For and Aft of the infantry - The 6th Engineers in the American Offensive of 1918

This article has some good wood and steel ponton bridge pictures

PDF PAGES 1086-1090
The Engineer R.O.T. Camp of 1921 at Camp Humphries VA.

This article has some pictures of various footbridge pontons


Article
The Bailey: The Amazing, All-Purpose Bridge - WWII










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