| The Docks Regulations 1925 Regulation 19(b)(i) | Chains etc. to be annealed | half inch | 13 millimetres |
| The Docks Regulations 1934 Definitions | Length of lock | ninety feet | 27.5 metres |
| Distance from edge of canal | fifteen feet | 5.0 metres |
| Depth of water | five feet | 1.5 metres |
| Regulation 1 | Height of fencing | two feet six inches | 760 millimetres |
| Distance from side of entrance | five yards | 5.0 metres |
| Regulation 9 | Width of ladder or gangway | twenty-two inches | 560 millimetres |
| Height of fencing | two feet nine inches | 840 millimetres |
| Regulation 11(1) | Depth of hold | five feet | 1.5 metres |
| Regulation 11(2)(b) | Depth of foothold including any space behind the ladder | 4 ½ inches | 115 millimetres |
| Width of foothold | 10 inches | 250 millimetres |
| Regulation 11(2)(c) | Depth of foothold including any space behind the cleats or cups | 4 ½ inches | 115 millimetres |
| Width of foothold | 10 inches | 250 millimetres |
| Regulation 11(2)(d) | Depth of foothold including any space behind the ladder | 4½ inches | 115 millimetres |
| Width of foothold | 10 inches | 250 millimetres |
| Regulation 17 | Width of working space around hatch | two feet | 600 millimetres |
| Regulation 19(b)(i) | Chains etc. to be annealed | half inch | 13 millimetres |
| Regulation 28(c) | Height of ladder | thirty feet | 10 metres |
| Regulation 35(b) | Width of space along edge of wharf | three feet | 920 millimetres |
| Regulation 37(a) | Depth of hold | five feet | 1.5 metres |
| Height of coamings | two feet six inches | 760 millimetres |
| Height of fencing | three feet | 920 millimetres |
| Regulation 40 | Distance from deck | two feet | 600 millimetres |
| Schedule |
| Paragraph (a) | Safe working load | up to 20 tons | up to 20 tonnes |
| Safe working load | 20–50 tons | 20–50 tonnes |
| Proof load | 5 tons in excess | 5 tonnes in excess |
| Safe working load | over 50 tons | over 50 tonnes |
| Paragraph (b) | Safe working load | up to 20 tons | up to 20 tonnes |
| Safe working load | 20–50 tons | 20–50 tonnes |
| Proof load | 5 tons in excess | 5 tonnes in excess |
| Safe working load | over 50 tons | over 50 tonnes |
| Paragraph (c) | Safe working load | up to and including 20 tons | up to and including 20 tonnes |
| Safe working load | over 20 tons up to and including 40 tons | over 20 tonnes up to and including 40 tonnes |
| Proof load | 20 tons in excess | 20 tonnes in excess |
| Safe working load | over 40 tons | over 40 tonnes |
| The Shipbuilding and Ship-repairing Regulations 1960 |
| Regulation 2(2)(a) | Length of ship | one hundred feet | 30 metres |
| Depth of ship | nine feet six inches | 2.9 metres |
| Regulation 2(2)(b) | Length of ship | one hundred feet | 30 metres |
| Depth of ship | nine feet six inches | 2.9 metres |
| Regulation 2(2)(c) | Length of ship | one hundred feet | 30 metres |
| Depth of ship | nine feet six inches | 2.9 metres |
| Regulation 3(2) | Flash point of oil | two hundred and seventy degrees Fahrenheit | 132 degrees Celsius |
| Regulation 7(b) | Height of hand-rails | two feet nine inches | 840 millimetres |
| Height of toe-board above floor | six inches | 150 millimetres |
| Regulation 8(1) | Height of fencing | two feet nine inches | 840 millimetres |
| Regulation 9(1)(a) | Width of ladder or gangway | twenty-two inches | 560 millimetres |
| Height of fencing | two feet nine inches | 840 millimetres |
| Regulation 10(2)(a) | Position of top step of ladder | twelve inches | 300 millimetres |
| Regulation 13(3) | Width of footway | seventeen inches | 430 millimetres |
| Regulation 14(1)(d) | Position of top of ladder | two feet six inches | 760 millimetres |
| Regulation 17(2) | Extension of planks forming stages | eighteen inches | 460 millimetres |
| Regulation 24(heading) | Height of stages | six feet six inches | 2 metres |
| Regulation 24(1) | Height of stages | six feet six inches | 2 metres |
| Regulation 24(2)(c) | Width of stages | seventeen inches | 430 millimetres |
| Regulation 24(3)(a) | Height of guard rail | three feet | 920 millimetres |
| Regulation 24(7) | Width of stages | twenty five inches | 640 millimetres |
| Regulation 25(1) | Height of fencing | three feet | 920 millimetres |
| Height of fencing | two feet six inches | 760 millimetres |
| Regulation 26(1) | Height of coaming | two feet six inches | 760 millimetres |
| Height of fencing | three feet | 920 millimetres |
| Regulation 36(3) | Size of chains etc. | half inch | 13 millimetres |
| Regulation 47 | Weight of load | 20 tons | 20 tonnes |
| Regulation 55(1) | Distance from source of heat | fifteen feet | 5 metres |
| Regulation 59(1)(b)(i) | Flash point of oil | seventy-three degrees Fahrenheit | 23 degrees Celsius |
| Regulation 60(2) | Flash point of oil | seventy-three degrees Fahrenheit | 23 degrees Celsius |
| Regulation 66(1) | Flash point of oil | one hundred and fifty degrees Fahrenheit | 66 degrees Celsius |
| Regulation 69(5) | Flash point of paraffin | one hundred degrees Fahrenheit | 38 degrees Celsius |
| Regulation 80(1) | Height of stages | six feet six inches | 2 metres |
| Second Schedule |
| Paragraph (a) | Safe working load | under 20 tons | under 20 tonnes |
| Safe working load | 20–50 tons | 20–50 tonnes |
| Proof load | 5 tons in excess | 5 tonnes in excess |
| Safe working load | over 50 tons | over 50 tonnes |
| Paragraph (b) | Safe working load | under 20 tons | under 20 tonnes |
| Safe working load | 20–50 tons | 20–50 tonnes |
| Proof load | 5 tons in excess | 5 tonnes in excess |
| Safe working load | over 50 tons | over 50 tonnes |
| Paragraph (c) | Safe working load | under 50 tons | under 50 tonnes |
| Safe working load | 50–100 tons | 50–100 tonnes |
| Proof load | plus 50 tons | plus 50 tonnes |
| Safe working load | over 100 tons | over 100 tonnes |
| Safe working load | up to and including 20 tons | up to and including 20 tonnes |
| Safe working load | over 20 tons up to and including 40 tons | over 20 tonnes up to and including 40 tonnes |
| Proof load | 20 tons in excess | 20 tonnes in excess |
| Safe working load | over 40 tons | over 40 tonnes |
| The Shipbuilding (Lifting Appliances etc. Forms) Order 1961 Schedule, Part III Paragraph (2)(a) | Size of rope | inches | millimetres |
| Paragraph (3) | Tensile strength of wire | tons* per square inch | Newtons per square millimetre |
| Paragraph (4)(c) | Safe working load | Safe working load* | Safe working load |
| Footnote | Definition of ton | 1 ton=2,240 lbs | none |
| The Docks Certificates (No. 2) Order 1964 |
| Schedule |
| Paragraph (1) Column (g) | Proof load applied | tons | tonnes |
| Column (h) | Safe working load | tons | tonnes |