If international trade is a living organism, then sea transportation must be the lifeblood. But how can the 55,000 merchant ships out there survive the era of fossil fuel eradication?

If international trade is a living organism, then sea transportation must be the lifeblood. But how can the 55,000 merchant ships out there survive the era of fossil fuel eradication?

If international trade is a living organism, then sea transportation must be the lifeblood. But how can the 55,000 merchant ships out there survive the era of fossil fuel eradication?