GB/T 39037.1-2021Lashing and securing arrangements on road vehicles for sea transportation on Ro/Ro ships - General requirements - Part 1: Commercial vehicles and combinations of vehicles, semi-trailers excluded (English PDF)

4.1 General requirements

4.1.1 Securing points shall be designed to enable the road vehicle to be secured to the

ship.

4.1.2 Each securing point shall have at least one lashing point with dimensions as

specified in 4.4.

4.1.3 The securing point and lashing point shall allow different angles of lashing to the

ship’s decks.

4.1.4 It is not permissible to have more than one lashing at each lashing point.

4.1.5 It is permissible to have more than one lashing point at a securing point, but each

lashing point shall have the strength required for a single securing point as given in

Table 1.

4.1.6 In the case of a securing point with multiple lashing points, the securing point

shall be capable of withstanding the sum of the loads that can be applied at each lashing point.

4.1.7 The surface of the securing point shall be smoothly connected, and shall not have

defects such as cracks and over-burning that affect the strength; it should not be used after repair welding.

4.1.8 The securing point shall not affect the vehicle function.

4.1.9 The securing points shall be arranged to facilitate lashing operations.

4.2 Requirements for number of points

The same number of securing points shall be provided on each side of the road vehicle.

The number and strength of securing points shall be in accordance with Table 1.

4.3 Requirements for lashing force

Securing points shall be capable of transferring the forces from the lashings or through other main components capable of withstanding the pulling force to the chassis of the road vehicle.

4.4 Basic dimensions of lashing points

Each lashing point, when assembled at the securing point, shall allow the inside free passage of a circle of at least 80 mm diameter, but the aperture need not be circular. The lashing point shall allow the passage of a hook of 25 mm opening (see Figure 1).

the semi-trailer towing vehicle, may replace the two securing points. If the towing coupling is used for securing vehicles other than semi-trailer towing vehicles, this shall not replace the number and minimum strength of securing points on each side of the vehicle given in Table 1.

5.1 General requirements

Securing points on vehicles shall be so located:

-- as to ensure effective restraint of the vehicle by the lashings;

-- that lashings can be readily and safely attached.

5.2 Requirements for spacing

Requirements for spacing of the securing point are as follows:

a) Securing points should be positioned in such a way that the angle between the lashing and the horizontal and lateral transverse planes lies preferably between 30° and 60° without interfering with other parts of the vehicle. If interference is unavoidable, tests or calculation analysis shall be used to ensure that the local of the vehicle, and slings and fixed locks are not permanently deformed or damaged;

b) Securing points should preferably be set two by two on the vehicle symmetrical to its longitudinal axis.

6.1 Check

6.1.1 The strength of the lashing points shall be checked either by calculation or by

static test carried out in accordance with 6.2.

Note: Other methods may be used if an efficiency at least equivalent can be proved.

6.1.2 If the checking is done by a test, there shall be no cracking, permanent

deformation, loosening, etc. of the securing point following the static test.

6.2 Static test

6.2.1 The minimum value of test force, F, to be used is that given in Table 1.

6.2.2 The test force is applied in the plane passing through the lashing point and forming

an angle of 60° with the horizontal plane passing through this point, at 60° to the