Complex sentence: They had "T" and "L" shaped extensions, the former was a landing for wood and charcoal and the latter, after Harry Meiggs absconded, became the landing for the Sausalito Ferry.
Split into simpler sentences: They had "T" and "L" shaped extensions, the former was a landing for wood and charcoal. The latter, after Harry Meiggs absconded, became the landing for the Sausalito Ferry.