Green’s Dictionary of Slang

whaler n.2

also waler

(Aus.) a tramp, a vagrant.

‘Ironbark’ Southerly Busters 177: Though not a ‘whaler’ now, And many a score of sheep I’ve shore For good old Jacky Dow [AND].
[Aus]‘Erro’ Squattermania 243: How did they manage the Murrumbidgee whalers, as they call them, where you were?
[Aus]Bulletin (Sydney) 30 Aug. 21/3: There are fifty-thousand ‘whalers’ about without a foot of land, / There are twice five-hundred squatters hold Australia in their hand?
[Aus]Brisbane Courier (Qld) 24 Nov. 7/7: The loafer who travels from station to station seeking work is a ‘sundowner’; seeking work but not wishing to get it, a ‘whaler’.
[Aus]Stephens & O’Brien Materials for a Dict. of Aus. Sl. [unpub. ms.] 53: These people [...] confuse the man who ‘swags it’ from necessity with the ‘sundowners’ and ‘whalers’ who eke out a living tramping from one place to another begging and stealing.
[Aus]Bulletin (Sydney) 5 July 16/1: [T]he wife and family all had bluey up; the eldest lad, about 10, staggered under a drum fit for any old whaler, while another game little pebble, apparently not more than seven summers, bent beneath the weight of the family bedding.
K. Harris Outback in Aus. 144: On the Murrumbidgee we asked several questions of an old ‘whaler.’.
[Aus]Townsville Daily Bull. (Qld) 10 Aug. 16/2: ‘Larry’ addresses the wandering multitudes: Hoboes, Bagmen, Whalers and Hatters.

In compounds

whaler’s delight (n.)

(Aus.) brown sugar mixed with cold tea to make a thick paste.

[Aus]Bulletin (Sydney) 14 Sept. 16/4: ‘Murrumbidgee jam’ consists of brown sugar muddled up with cold tea. When spread on damper, and dropped jam-side down in the sand, it doesn’t taste so well as when not dropped jam-side down in the sand. It is also called Whaler’s Delight.