Translations
But if you are old, never go far from the ship: lest, when you are called, you should be unable to come in time.Elizabeth Carter (c.1750)
But if you are old, never go far from the ship, lest you should be missing when called for.Thomas Wentworth Higginson (1890)
But if you are old, do not even go far from the ship, lest when you are called you make default.George Long (1890)
And if you are old, never go far from the ship, so that when you are called you may not fail to appear.Percy Ewing Matheson (1916)