AGE OF SEASAcquiring signal
World chapter · 02
A sailing ship is a load-bearing system made from timber, canvas, rope and labor. Once its structure and rig are understood, ship names become more than silhouettes.
Chapter missions
Explore hulls, masts, sails and rigging, then see how historic vessels answered the demands of trade, distance and war.
Follow load from keel and frames through planking and deck, then upward into masts, stays and the web of running rigging.
8 MIN ↗Neither one blueprint nor only a treasure ship, the galleon joined ocean cargo capacity, sailing qualities and broadside armament in changing proportions.
7 MIN ↗Route archive · Later missions
15 SIGNALSOne name usually points to a smaller, agile rig; the other to a large ocean-going family built around capacity, endurance and broadside force.
At the bow, a carved body made a ship’s name and loyalties visible while weather, weight and repair kept symbolism within practical limits.
What is the difference between fore-and-aft and square sails? Compare yards, windward ability, speed, crew work and the rigs of ships, barques and schooners.
Connect stone and iron ballast to center of gravity, buoyancy and righting moment, then see how draft, trim, shifting weight and archaeology complicate the story.
Identify a barque mast by mast, distinguish it from a full-rigged ship, barquentine, brig and schooner, and learn why an earlier archival use of bark may not name the later technical rig.
Separate a timber structural keel, keelson and false keel from a sailing foil and ballast keel, then follow grounding loads from a modern external fin into the hull structure.
Ship draft or draught is the vessel's depth below the waterline. Learn to read draft marks, distinguish load lines, calculate mean draft and plan under-keel clearance.
Read trim by stern or bow from end draughts, connect LCG, LCB, LCF and MCT 1 cm, and calculate how a longitudinal weight shift changes forward and aft draught.
Start with the GZ between weight and buoyancy lines, calculate KN−KG·sinφ, and read maximum lever, curve area, positive range and downflooding limits.
Follow seam raking, oakum preparation, caulking irons and paying with pitch—and see why too much force could damage the hull it was meant to seal.
See how coopering, acceptance, marking, stowage and shipboard repair decided whether stores recorded at departure survived to the next port.
Move from contract, mould loft and timber yard through keel, frames and planking to launch and fitting out across a shore full of trades.
Calculate air draft from the waterline to the highest point, then check bridge clearance against water level, datum, motion and safety margin.
See how tackles, tides and careful unloading exposed one side of a wooden hull for cleaning, caulking, inspection and repair.
Follow a naval gun through recoil, reloading and the next firing position—and see why gunnery depended on handling the whole ship.