Inconspicuous, partly submerged vessel or object, or combination of such vessels or objects being towed
1. If less than 25m in breadth, exhibit one all-round white light at or near the forward end and one at the after end (except dracones need not exhibit a light at or near the forward end)
2. If 25m or more in breadth, exhibit two additional all-round white lights at or near the extremities of its breadth
3. If exceeding 100m in length, exhibit additional all-round lights between the lights prescribed so that the distance between the lights shall not exceed 100m
4. Exhibit a diamond shape at or near the aftermost extremity of the last vessel or object being towed and if the length of the tow exceeds 200m an additional diamond shape where it can best be seen and located as far forward as is practicable