LINES PLAN

Lines plan is the base shape of the new ship that will be built. Generally the lines plan showing in three views. They are body lines, profile lines as buttock lines and plan view lines as water lines. To translate the lines plan into mould surface , we need a base line and center line.

From center line , the line will developed to buttock lines that slice the ship from bow to stern. Buttock lines are shown in profile line. Line spacing usually 500 mm or 0,5 m. For support vessel it usually divide to 16 lines, from center line to 8 meters. But it depend on ships type.

From base line , they will develop to water lines that slice ships from left to right side of the ship. we can show them in the plan view of line.

Lines plan drawing must be follow with Offset table that contain all points of the lines.
They arranged by x,y,z axis. The engineering must prepare this offset table before give drawing to lofter or marker.

One thing that we have to remember is lines plan
prepared for half ship. Efficient for time and location of lofting shop.

Marking the lines plan, we have to give more attention for shape of the lines. Sometimes point in offset table are not fix and smooth. An important thing that we have to remember is the shape of lines must. They must be ensure to be fair. Fairness does not have a mathematical definition, but can include smoothness, continuity of curvature. Fairness must often be ensured in 3 dimensions. Maybe it took for a few times to check just for one frame line, water line or buttock lines.

For this moment that is all that i can show to all my visitors. I hope this posting can give satisfaction to you who want to now about lines plan. Maybe i will prepare the subject about lines plan in the next posting.

especially to my senior that have read my posting and explanation about lines plan, with sincerity could give critic and advise that can give advantage for us as a Lofter.

For attention i said thanks

We need the patience to be a marker or lofter, cause it will took along time to build a ship. Sometime we are in standby time, sometime we will busy to finish some job. You know that sleepy is our real enemy, need some fresh mind, fresh stamina to this job. Some marker or lofter will addicted with coffee and cigarette, like me.