3 however sufficient flotation is designed into the arm template sections 21 so that the entire assembly with the well template submerged and partially flooded still floats with the pile template penetrating the water surface probably before this first stage of flooding of the flotation means of center section 10 is initiated lowering lines 44 46 48 and control lines 32 34 would be raised from each of the arm templates including the flotation units 18 of arm template sections 21 to appropriate points on adjacent lowering barge as illustrated in fig3 with the center template section 10 then submerged and the arms extending back to the water surface the lowering barge pulls the template under the barge 36 bringing the lowering lines up snug at three points located off the sides of the barge as illustrated in fig3 from this position then additional members of the template including flotation units 18 of arm template sections 21 are flooded only enough members are flooded to provide a submerged weight which is within the capacity of the lowering system with the template then held securely by the barge with the arms folded in toward the barge as illustrated in fig3 the sub sea template is then lowered the remaining distance to the sea floor with the template on the sea floor oriented in position as required and leveled if necessary the lowering cables are pulled away from the lowering barge keeping sufficient tension so that the arms 13 are drawn outward and then fall to the sea floor.